yC-NRLF How To FEED POULTRY FOR ANY PURPOSE WITH PROFIT A Complete and Authoritative Treatise on Feeding All Classes of Poultry —Nutritive Values of Feeds — Formulas to Meet Every Probible Requirement and for Fowls Kept Under All Conditions — Practical Rules for Feeding, and How to Adapt Them to Individual Requirements — A Text Book for the Beginner — A Reference Book for the Expert BY JOHN H. ROBINSON FULLY ILLUSTRATED PRICE, $ L.25 Copyright by RELIABLE POULTRY JOURNAL PUBLISHING COMPANY Quincy, Illinois 1920 PUBLISHED BY RELIABLE POULTRY JOURNAL PUBLISHING COMPANY QUINCY, ILLINOIS, U.S.A. CONX E NTS CHAPTER I General Factors in Poultry Feeding 5 CHAPTER II Properties and Composition of Poultry Feeds . 10 CHAPTER III Principles, Methods and Systems of Feeding 26 CHAPTER IV Preparation of Feeds for Poultry .. 37 CHAPTER V Feeding Chicks From Hatching to Weaning 44 CHAPTER VI Feeding Chicks From Weaning to Maturity..... 59 CHAPTER VII Feeding for Egg Producton 71 CHAPTER VIII Fattening and Finishing Poultry for the Table 85 CHAPTER IX Feeding Breeding and Exhibition Fowls .'. 90 CHAPTER X Feeding Turkeys, Peafowl, Guineas and Pheasants 95 CHAPTER XI Feeding and Fattening Ducks 98 CHAPTER XII Feeding and Fattening Geese 103 CHAPTER XIII Growing Feed for Poultry 108 Index . 112 MAIN L'liRARY-AGR'.CUI-TURE: L C HAPTEU T • General Factors in Poultry Feeding af Economic Conditions Determine Methods— Increased Use of By-Product Feeds Makes Knowledge of the Science of Feeding Useful to Every Poultry Keeper — Nutritive Requirements and Feeding Habits of The Several Kinds of Poultry — Comparison of Digestive Organs of Animals and Birds — Relations of Art and Craft in Poultry Feeding THE aim of this book is 'to give a working know- ledge of the whole subject of poultry feeds and feeding. The conditions of modern life, and the economic developments in poultry culture, and in other interests directly or indirectly related to it, make some acquaintance with the scientific side of the subject essen- tial. A generation ago, under what we have been accus- tomed to call natural conditions of life for them, o; r several kinds of domestic poultry fed themselves, or \ver2 fed, almost entirely upon the waste products of farms, and the wastes from the homes and the barns and gardens in the less thickly populated urban districts. What town poultry keepers could not supply their flocks from such sources was made up by purchase of grain from nearby farms. In the last thirty years all this has been changed The increasing demand for poul- try and eggs in cities has led to a great increase n the amount of poultry kept in sections where the farmers have no surplus stock feed to sell. At the same time. the increasing use of pre- pared cereals for human food made great supplies of by-products suitable for stock feeding. Such by- products consist of the coarser, less palatable, and least nutritious parts of the grains from which they are derived; or of the residue when a particular food ele- ment is separated from *a certain grain to give a hu- man food having peculiarly desirable properties. T h e profitable use of such by- products in stock feeding is a question of combining them properly with other feeds and of being able to obtain them at least as cheaply as the feed ele- ments they contain could be bought in the cheapest com- mon whole feed article that might be used for the stock to which they are to be fed. It follows that the intel- ligent and economical use of I. K. FELCH FEEDING A FLOCK OF HIS LIGHT BRAHMAS (From a snap-shot by J. H. Robinson, May, 1901) I. K. Felch, known as "The Father of Poultry Cul- ture in America", was born in Natick, Mass., January 17, 1834, and died there August 31, 1918. From 1846 until his death he was actively interested in poultry culture. The first record of an exhibit of poultry by Mr. Felch, and his first published statement relating to poultry are in the report of the Middlesex South Agricultural Society's Fair at Framingham, Mass., September, 1864, published in "Massachusetts Agriculture, 1864." At this fair he exhibited a cock and four hens. Golden Penciled Hamburgs, which he had imported in 1863, in competi- tion for the premium awarded for best pen of fowls and best statement of their performance for six months pre- ceding- the fair. The part of his statement relating to their production reads: "The fowls have been for most of the time enclosed in a yard, three rods long and one rod wide, and their food has been nothing but corn, with fresh water and oyster shells, at an expense Of $3.75 for the five fowls for the six months. The four hens have laid in the six months 472 eggs, and one of the hens has been sick ten weeks of the time, being an aver- age of 118 eggs to each hen. But to give each hen her just merits, we should consider that the sick hen only laid about half as many eggs as each of the others. Allowing her to lay 60 eggs would leave 412 to be laid by the three others — being 137 eggs each. One of the hens has in my judgment laid 150 eggs within the past six months. From observations we know that she laid constantly and more than the others." these feeds requires some knowledge of the chemical com- position of feed stuffs, and of the scientific principles of feeding. True, the abundance of feeds of this kind has led manufacturers and dealers to give particular atten- tion to the production of commercial mixtures of feed in which these by-products are combined, either with whole •feeds or with other by-products, in such proportions that the mixture is equal or superior in value to some com- mon whole feed for which it is offered as a substitute, or perhaps is a complete ra- tion for a specific purpose; but even in using these feeds the poultry keeper needs to know something of their composition and of the prop- erties and values of the in- gredients which they contain. He needs this not so much for protection against adul- teration of mixtures by un- s c r u p u 1 ous manufacturers and dealers, as for insurance against the contingency of being unable to obtain sup- plies of a feed that he has been accustomed to us^, and to enable him to combine to the best advantage the use of good commercial mixtures and feeds obtained from other sources. The acquaintance with the scientific side of the subject that serves this purpose must be correct as far as it goes, but need not go farther than familiarity with the names and properties of the nutri- ent elements in feeds, their general relations to the nu- tritive requirements of ani- mals—particularly poultry— and simple methods of calcu- lating the values of rations. These are in reality matters which under modern condi- tions are no longer peculiar- ly scientific but have become a necessary part of practical common knowledge of feed- ing. For that reason it ,seems best in a popular dis- cussion of the subject to present the rudiments of the science of feeding as a part of the practical statement of the subject, introducing each in its appropriate place in the general discussion. HOW TO FEED* EQ.ULTJtfriE3B.. ANY PURPOSE WITH PROFIT A MAINE FARM THAT SPECIALIZED IN POULTRY — BREEDING BARRED PLYMOUTH ROCKS TO STANDARD AND FOR EGGS AND MEAT Here about three or four hundred old birds and from a thousand to twelve hundred chicks had the range of the orchards, pastures, meadows, and some of the cultivated fields- — in all about forty acres — and could pick a consider- able part of their living- at some seasons. What Poultry Eat Of poultry in general it may be said that their diet is more like that of man than the diet of other domestic animals. The pig is the only one of the larger animals that is an omnivorous eater, and while the pig will eat meat of any kind when it can get it, it seems much better able to subsist on a vegetable diet than most kinds of poultry. In comparing the natural diets of the most common kinds of poultry we find at the same time such similarity and such adaptability in all, that they may be kept on the same ration, with slight and easily made variations, and yet such differences and such special adaptabilities that one kind may thrive on feed upon which another would be half starved. Their differences in structure and habits of life also enable them to obtain feed under different conditions. The likeness of the several common kinds of poultry in the matter of feeding is of advantage to the poultry keeper when he wishes to keep two or more kinds under intensive conditions. Their unlikeness is of advantage when he wishes to utilize as fully as possible the waste feeds on a large area of land, or large quan- tities of particular kinds of waste or cheap feed. The kinds of poultry to be especially considered in a general work on poultry feeding are, — fowls, turkeys, ducks, and geese. The guinea, peafowl, and pheasant re- quire substantially the same feeding as the turkey, and the swan may be considered a large goose. We can, therefore, cover the whole subject thoroughly by treating matters relating to the feeding of fowls, turkeys, ducks, and geese ftlly, and then making shorter special statements for the other kinds. Feeding Habits of Fowls Fowls are the most domestic of poultry. They will forage only as far as is really necessary to get feed. They appear averse to getting so far away from their coop or from cover where they feel safe, that they cannot reach it by a quick dash if danger threatens. So they usually forage over a limited area, working over it thoroughly, but rarely going far in any direction. The ordinary farm flock of fowls, with the chickens that are raised each year, generally take all the poultry feed there is about a farm house, its outbuildings, and the nearby land. That is why so many farms in America have only fowls, — no turkeys, ducks, or geese. Fowls are, on the whole, the most use- ful and profitable kind of poultry; therefore they take precedence of the others except where particular interest in one of the others results in either limiting the number of fowls kept or making special provision for it beyond the range of the fowls. A MASSACHUSETTS MARKET POULTRY PLANT IN A LARGE BACK YARD WHERE 1200 TO 2000 WINTER CHICKENS WERE GROWN A YEAR Here everything consumed by the birds had to be bought for cash. Only nearness to good markets, good work and a good product make poultry growing profitable under such conditions. GENERAL FACTORS IN POULTRY FEEDING Fowls eat almost any tender grass and weeds. They eat all kinds of common grain and most large weed seeds, but little grass seed or small weed seeds. Even small chickens are not at all keen for grass and weed seeds so small that old fowls pass them by. Fowls eat most kinds of insects and worms that are large enough to be readily visible, but seem quite indifferent to the very -small insects that attack vegetation. They do not, as far as the writer has observed, eat ants, but they are fond of "ant eggs." They also are fond of nearly all kinds of fruit and vegetables— the only popular article^ of human food in this line which they do not like being beans. Feeding Habits of Turkeys Turkeys are much less domestic by nature than fowls. Being larger, and requiring more feed, — and having also the same reluctance in consuming small bits of nutriment, tur- the nearest water and remain there all day. Nor will they be particular about coming home at night. Their natural feed is the small animal life they find in the water, and especially along the margins of ponds and streams. With this they eat a great deal of coarse and tender green stuff. They probably get little grain in wild life, yet in domestication they can stand a heavy diet of ground grain. Feeding Habits of Geese Geese, so like ducks in appearance that people who do not know both well often find it difficult to distinguish between large ducks and small geese, are the most herbi- vorous of poultry. They can live entirely on grass and similar green forage, with such animal feed as they may get from their range. While they prefer marshy land and access to the water, they will thrive on any good pasture. They like grain, and make their greatest growth when A NEW ENGLAND INTENSIVE POULTRY FARM— WHITE BIRCH POULTRY YARDS, BRIDGEWATER, MASS. The houses for laying-breeding fowls are in the background at the right. The small houses at : the .left ; are for breeding ducks. In the middle foreground and center are brooders for young chickens; the colony houses across the rear are for weaned chicks. Small fruit trees may be seen in all yards. keys range much more widely than fowls. They have not the same attachment for home, and when foraging is poor on their accustomed range they are inclined to wander away, looking for a better feeding ground. This habit makes them especially valuable in the destruction of grasshoppers and other insects which often come in great numbers and move rapidly over large areas. Insects and grain, with some tender vegetation, are their principal diet. They will eat most of the things that fowls eat, but their wanderlust generally leads them to the big pasture fields and woods, leaving the products of gardens and orchards to their less enterprising neighbors. Feeding Habits of Ducks Ducks are the most carnivorous of our domestic birds. They are inclined to be as domestic as fowls — provided the dooryard affords «them an opportunity to dabble in water. Otherwise they will, if at liberty, seek given a liberal grain ration with unstinted green feed. They will go long distances to feed, but almost invariably come home long before nightfall. The foregoing general statements of the feeding habits of fowls, turkeys, ducks, and geese show how these different kinds of poultry are adapted to the utilization of feeds which generally are not consumed by or not .available to other kinds of farm live stock, and how, 'while using such wastes, they also do good service in destroying all kinds of insect pests. In all arrangements for poultry on farms, therefore, the first thing considered should be the possible service of poultry in these matters. This is in most cases limited by the necessity for pro- tecting the birds from natural enemies. Yet it usually is possible to do much more in this direction than is com- monly done, and it makes the problems of feeding poultry on the farm much easier, and the profits correspondingly gi eater and more satisfactory. HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT The Digestive Organs of Poultry There are some things in the feeding of poultry that are better understood if one keeps in mind the resemb- lances, as well as the differences, in the three types of di- gestive system which are found in our domestic animals and birds. The horse masticates its feed thoroughly as it takes it into the mouth; the feed then passes into the stomach, where digestion takes place, and from this into the small intestine where it is assimilated. In the pig the digestive system and the processes are similar to those in the horse, but mastication is not so thorough. Pigs cannot digest dry fodders and hard grains as fully as horses do, although they have strong teeth and powerful jaws. In the ruminants — cows and sheep — there are said to be four stomachs, though only the last in the series is properly a stomach. A cow partly masticates her feed as she eats it. When the feed is swallowed it passes into the first stomach or paunch, which is so connected with the second stomach that the contents shift back and forth from one to the other with a churning motion. After a period of this action the feed passes into the third stom- ach where it forms into balls, which are re- turned to the mouth for com- plete mastication. When swallowed this time it pass- es into the fourth stomach, which is the true stom- ach, and from there to the in- testines. We are accus- tomed to say that birds have no teeth, but the beaks and bills of birds are to all intents and purposes a combination of incisor and canine teeth. So birds have teeth for biting, cutting and tearing, but not for mastication. The throat is very wide in proportion to the size of the creature, and the gullet capable of great distention. Birds can swallow feed in much larger pieces in proportion to their size, than most other animals can. The feed swallowed by a bird passes into the crop, which is an enlargement of the gullet. In the land birds, fowls, turkeys, etc., the crop is globular and quite large. In ducks, geese, and other aquatic birds, there is no such distinct development of the crop, but the whole gullet is capable of great distention, and when the birds are able to eat greedily of a bulky feed, this distention of the gullet may be observed the entire length of the neck. THE DIGESTIVE ORGANS OF THE FOWL a, Tongue; (upper bill removed); b, Esophagus; c, Crop; d. Esophagus; e, True Stomach; f, Gizzard; g, Duode- num; h, Small Intestine; i, Caeca; k, Rectum; m, Cloaca; o. Liver; p, Spleen; r, Gall Bladder; s, Pancreas. Courtesy of the New Jersey Experiment Station. From the crop of a bird the feed passes into the stomach proper, which is a very small organ, and from that to the gizzard — a muscular sac having for its inner surface a thick, tough, corrugated skin. Here it is re- duced to a pulp, and in this condition it passes to the in- testines. According to traditional popular belief the giz- zard itself is not capable of masticating the feed, and — to assist it in that function — the bird swallows bits of gravel or any hard substance that will give a number of sharp cutting edges. Full discussion of that matter is deferred to the appropriate place in the discussion of feeds, but it may be pointed out here that in birds the feed is subjected to the strong action of the gastric juice before going to the gizzard, while in animals which mas- ticate their feed completely in the mouth, the action of the gastric juice comes after mastication. Nutritive Requirements of Poultry The body of a bird consists of a framework of bone, to which are attached the muscles that control it; a per- manent external covering of skin, in which grows a changeable covering of feathers; and the internal organs of respiration, circulation, digestion, sensation, and re- production, which are required to sustain the organism and the species. Most of the internal organs are essen- tially enlargements and peculiar developments of the skin which lines the inside, just as it covers the outside of ihe body. Certain facts about the composition of the body are apparent on ordinary observation. We can see that the skeleton contains a great deal of lime, and — in the body of a bird that was in normally good condition when killed — we can see more or less fat. We also see that this fat is in different amounts in different birds, and often in different places. And observing birds that were known to be in health, and perhaps producing well when killed, though not in what we consider prime condition for the table, we naturally and rightly infer that fat is not an essential part of the organism as are the bones, muscles, skin, etc. In extremely fat birds it is easy to see that the excess of fat may both hinder locomotion and interfere with the functions of the internal organs. The mineral matter of the bones — and the fat. when present, are the only parts of the body of a bird in which we seem to recognize elements of the body in form like that in which they may be seen elesewhere. The rest of the structure appears quite unlike the grains and vege- tables which observation showed us make up so large a part of the diet of our domestic birds. For information as to the elements which compose flesh and feathers we turn to the chemist. Chemistry tells us that flesh, skin, etc. of birds are made of nitrogenous material to which is given the general name protein. The chemical analysis of poultry meat finds in it principally water, protein, and fat. The substance of all fleshy tissues is formed from protein, and it is customary to consider the fat found in them as not an essential part of their structure. This, however, is a too-narrow view, overlooking the function of the fat, or oil, in various parts of the body in keeping it in good order. Even the bones contain fat. Of the chemistry of feathers we know little, for they have no feed value, and chemical investigation in this line has so far been almost entirely devoted to the things that are used to feed either men or animals. It would appear, " however, that they contain a considerable proportion of protein. The analysis of meat does not show the presence of GENERAL FACTORS IN POULTRY 'FEEDING carbonaceous elements other than fat, — except in very small quantities in the liver. This absence of the starches and sugars from the dead body does not mean that they are not highly essential to the nourishment of the living body. All that it signifies is that they are not stored in the body in the form in which they are taken into it. That poultry need such feeds, and in large quantities, is plain, for they consume them, and generally prefer what the feeder considers a too-carbonaceous ration to a more nitrogenous one. The reason for this is apparent when we consider that what an animal eats not only builds up and keeps in repair its body, and provides ma- terial for a product, such as milk or eggs, but must first keep up the heat of the body and provide the energy re- quired for every motion and function. day's rations meet the needs of the birds. But poultry of all kinds are much like human beings in their tastes and in their likes and dislikes for particular things. The common feed elements they require can be pro- vided in many different combinations. Birds accustomed to a particular combination are often so reluctant to take another that they will eat of it only enough to maintain them, but not enough to give theii best growth or pro- duction. We cannot say that this is always purely taste or whim — something that they should be forced to over- come, and will overcome if they can get nothing else. Birds brought up on a certain diet have their digest've systems especially adapted to it, perhaps to such an extent that they are poorly adapted to some other diet which may be given them. To force them to a diet they apparently do LOW-LYING PASTURE LANDS AND THEIR PONDS AND BROOKS ARE IDEAL FOR DUCKS AND GEESE. Scene on Brook View Farm, West Newbury, Mass. In the requirements for the growth and maintenance of their bodies, poultry are like animals, but in the re- quirements for reproduction another element comes in. For the shells of their eggs they need much more lime than is contained in any vegetable or flesh feed. This they evidently obtain in a state of nature by eating small bits of stone, shell, etc., that will supply it. In domestication, with egg production extended through much longer sea- sons, and with birds kept so long on the same areas that all material of this kind at or near the surface has been consumed, it becomes necessary to supply shell-making material libe'rally. Art and Craft in Poultry Feeding For reasons which will appear as the subject is de- veloped in succeeding chapters, the feeding of poultry could not be reduced to an accurate science, even if all poultry of the same kind had precisely the same taste and capacity for digesting and assimilating feed. It would still be necessary for the feeder to rely upon his judgment in many circumstances, and to be governed largely by temperature in his endeavors to make each not relish is not good policy, unless it is known to be a good ration, and unless also it is a ration which the poul- try keeper intends to feed regularly. From what was said earlier in this chapter the reader will rightly infer that poultry can be brought to adapt themselves to almost any diet or system of feeding by which they obtain enough to eat. But this is true of poul- try, or of a kind of poultry, only in a general way. Individ- ual birds vary both in the extent of their adaptability, and in the direction of adaptability; and the adaptation of a flock to a diet or a system of feeding unsuited to some of them is really brought about by the extermination of the individuals not adapted to it. They do not grow as oth- ers do. They are more susceptible to disease. So by a process of natural selection they disappear entirely within a few years. Whether it is policy for a poultry keeper thus to adapt his flock to a particular system, depends upon his object in poultry keeping and the real merit of the sys- tem. In general, the good feeder works by the opposite rule, studying by every means in his power to provide the rations that are most palatable to the birds and that give the finest development. CHAPTER II Properties and Composition of Poultry Feeds What Cheny.stry Finds in Feeds — Peculiar Properties and Uses of Cereal, Vegetable, Animal, and Mineral Feeds Profitable Use of Commercial Mixtures and Condimental Feeds — Table of • Analyses and Nutritive Values of Feeds of All Kinds — Explanation of Mathematical Calculation of Rations WHILE it is chiefly the nutritive elements in feeds that concern the poultry feeder, most of the whole feeds and many of the by-products contain a considerable percentage of indigestible matter. The presence of this in a feed is often immaterial, as far as the results of using the feed are concerned, but may considerably affect the cost. Some indigestible matter is positively injurious, while some may be beneficial under certain circumstances. These points have to be considered in connection with the articles to which they apply. Chemical analy- sis of feeds finds in them a great many different in- gredients, but in the ordinary dis- cussion of matters relating to f e e d- ing, these are con- sidered in the few groups to one or NEVER TOO YOUNG TO BEGIN TO the other of which LEARN POULTRY FEEDING , r ,u each of the sep- Note equipment to suit scale of _rof i operations — a lard pail for mixing arat€ feed, an old milk pan for the water m a v be assigned which the boy has learned ducks must always have with their feed. These are — pro- tein, carbohy- diates, fats, ash, and fiber. Mention of the functions of these was made in the preceding chapter. Here we have to consider their character more particularly. Protein — The most familiar example of nearly pure protein is the white of egg, which contains no carbohy- drate, just a trace of fat, and about one per cent of ash — with about seven times its bulk of water. This is of peculiar interest in a study of poultry feeding because in the results of the process of incubation we see a mmure germ, quickened into life by the continuous application of a suitable degree of heat, grow to a perfectly developed chick, by a mode of assimilation of the tissue-forming material which the albumen of the egg provides. The solids of lean meat and blood are about ninety per cent or more protein. In milk the protein is in the form of casein. Pure, dry protein is a hard, horny substance; and in grains the hardness of the grain depends upon the amount of protein. Carbohydrates — The apple and potato are the com- mon food articles which contain the highest percentages of carbohydrates, and the lowest of both protein and fat. The white potato is almost clear starch. In the sweet potato a part of the carbonaceous material is in the form of sugar. In the common grains the amount of starch varies from fifty to seventy per cent. Grains and seeds which contain large amounts of oil are those in which a considerable part of the common proportion of starch takes the form of fat. Fats — The familiar pure fats used in human food are 10 butter, lard, oleomargarine, and the various vegetable oils. The common grains contain relatively small percent- ages of fat, running from about two per cent in wheat, barley, and rye, to five per cent in oats, and five to eight per cent in corn. The poultry feeds having the highest percentages of fat are the meat by-products, beef and pork scrap, which may contain as high as thirty to forty per cent of that element, and cottonseed and linseed products, which have the same wide range of fat content. Ash — The common ash or mineral matters in feeds are phosphates of lime, soda, potash, etc. Chemistry finds some mineral matter in all feed articles, and some of the grasses and forage plants contain high percentages of it. Fiber — The fiber in feeds is generally indigestible, and consideration of it in a study of feeding deals mostly with the question of the effect of the fiber in an article upon its palatability, and its possible irritating effects when too much is taken into the digestive system. The fibers are largely carbonaceous in character, though lack- ing in nutritive quality. Oat hulls are the most familiar form of fiber in poultry feeds. Vitamines — Besides the five classes of food elements just described, investigators in food research have re- cently demonstrated the presence in most food articles in a natural state, of certain elements of great importance in nutrition which have been called vitamines. The chemical nature of these has not yet been satisfactorily determined. AN OCCUPATION FOR DECLINING YEARS This man, when he became too old to work at his regular trade, built a small poultry plant at the edge of the woods, and with about two hundred hens and the chickens raised to keep up the flock kept the wolf from the door in his old age without working beyond his strength. His feed pail is larger than that of the boy above, but his work and equipment are not "on a busi- ness footing." PROPERTIES AND COMPOSITION OF POULTRY FEEDS 11 COLONY HOUSES FOR LAYING STOCK ON FARM OF F. W. C. ALMY, TIVERTON FOUR CORNERS, R. I. Their importance in nutrition is evident, but the amounts necessary or most economical in rations have not yet been found experimentally. In the present state of knowledge of the subject it appears that questions as to the use of vitamines are of little — if any — practical interest to stock feeders, because to a very great extent the conditions which reduce the normal quantities of vitamines in human diet, correspondingly increase the supply jn by-products quantities of water-soluble vitamines, but much of the fat-soluble. Lard and sugar contain no vitamines. Ordin- ary lean meat contains little of either kind, but liver, kidney and heart have a good deal of both. Leaves and roots of plants contain much water-soluble vitamines, and any oil in them may contain fat-soluble vitamines. It does not appear that there is any danger of poultry fed a suitable variety of feeds lacking a sufficient supply of BUSINESS-LIKE1 POULTRY FEEDING — IT PAYS TO USE HORSE POWER WHEN THE SCALE OF OPERATIONS WARRANTS This -is a common type of feed wagon, locally called a "dough cart", long- used in Southeastern New England. All the feed and water for many flocks can be carried at one load. The type of poultry farming with the equipment shown on this page has been more continuously successful for large farm flocks than any other. of the manufacture of human foods, which are used for stock feeding. Thus in the finer grades of wheat flour the vitamines are largely absent, nearly all in the wheat remaining in the coarser by-products. Two kinds of vitamines are recognized, — water-solu- ble and fat-soluble. The first are said to be essential to sustain life, the others for the growth of the young. Both are found in whole milk. Butter has insiginficant vitamines. Hence special attention to them is not called for unless it should be clearly shown that their use in some specified way gives unmistakable greater efficiency in feeds, and especially in the use of cheap feeds. Physical Properties of Feeds In feeding practice it is often found that poultry show decided preferences between feeds having approx- COOPS FOR YOUNG CHICKENS REARED WITH HENS ON FARM OF F. W. C. ALMY, TIVERTON FOUR CORNERS, RHODE ISLAND 12 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT imately the same chemical composition so far as the prin- cipal nutrients are concerned. To a limited extent such preferences may depend upon those nutrients being some- what different in the form in which they occur; but as far as ordinary observation shows, the birds are governed in their preferences largely by the ease of obtaining feed, and by whether the act of swallowing it is attended by unpleasant sensations. They do not appear to have any nice sense of taste, but do seem to show some judgment as to whether a particular feed before them is worth eating. In general they take the feed that they can get easiest and show aversion to those containing large pro- portions of dry fiber. Corn and Corn Products Corn is at the same time the most valuable and the most dangerous of the grains fed to poultry. Its value comes from its cheapness (under normal conditions), its general availability, its high digestibility, and the fact that most kinds of poultry prefer it to other grains. Its dangerousness is due to the fact that it is the hardest AFTER THE CORN IS CUT ON A NEW YORK FARM The chickens have been in it all summer but not visible to the camera. Chickens and corn are an ever-profitable combination. grain properly to ripen, cure, and preserve; and that even when the whole corn has been well cured, the products milled from it are apt to heat and mold in warm weather, and when fed in that state may be highly injurious. Avoidance of the dangers of corn is a matter of care and good judgment on the part of the poultry keeper. Any unsoundness or unwholesomeness in corn products is easily detected by inspection, or such simple tests as may be applied by the poultryman. The general preference of poultry for corn is by no means an exclusive one. In a mixture containing corn they are apt to eat the corn first, whether it is whole or cracked, but do not invariably do so. If they are fed up on corn and have had little of other grains, they will often lose appetite for corn and eat greedily of a grain like oats or rye, which ordinarily they would leave until all the corn had been consumed. The large size of the grains of whole corn, and its bright color evidently have much to do with its attraction for poultry, for 'it may be observed that they are much more partial to cracked corn that is clean and bright in appearance than to that which is bleached and dull looking. They will show this preference immediately when unattractive corn is placed before them. Hence we cannot conclude that it is perception of the inferior ouality of the dull-looking corn that makes them reluctant to eat it. Corn may be fed to poultry in any form — green or ripe, whole, cracked, coarsely or finely ground, raw, or rooked. It is not economy to feed green corn to poultry, and the only occasion for feeding it is to use green sweet corn from the garden that has become too hard for th^ table. Where the quantity of this is so small that it is not worth while to go to the trouble of thoroughly curing it, it is as well to feed it to poultry at once, for such odds and ends of sweet corn left about are apt to mold before they cure, or to be eaten by mice. Many people are afraid to feed unripe corn to poultry because they have heard much of the dangers of feeding new corn to other stock, especially to horses. As far as feeding to poultry is con- cerned there is no danger, provided the corn is sound and clean. If it has heated or is moldy there may be risk in using it freely, but in all cases of damaged or inferior feeds it is a safe rule to use the damaged article in such amounts as will be readily eaten once a day by poultry that are well fed at other times with sound feeds. This practice enables a poultry keeper to use to advantage feeds that may have become damaged on his hands, or that can be obtained at a price low enough really to jus- tify their use. In buying corn and corn products the appearance and texture are gen- erally fair indications of their qual- ity. The protein and the fat in a grain of corn are principally in the germ and near the outer surface, the starch appearing as the soft in- side portion of the kernel. The more protein and fat the corn contains the larger will be the hard, darker- colored portions of the grain. By splitting a whole grain of corn or by noting the relative proportions of hard and highly-colored and soft, lighter-colored parts of the particles of cracked corn one can tell whether it is relatively high in feeding value or not. Of course these determinations are not accurate, but with experience the feeder's judg- ment may become good enough for practical purposes. The quality and texture of white corn are not as plain to observation as in yellow corn, but the same difference ex- ists, and the judgment of the eye may be reinforced in the inspection of cracked white corn by testing the par- ticles with the teeth. The color — (that is, white or yel- low), does not influence the quality. The quality of corn meal may be judged by the ap- pearance, weight, smell, taste, and the effect of scalding with boiling water. Meal from ripe, hard, dry corn is bright and clean looking, and swells immediately when wet with boiling water of which it will take up a con- siderable quantity, making a sticky mush. Meal from poor corn is dull in color, light in weight, often smells stale or moldy, and when tasted lacks the flavor of good meal. Wet with boiling water it does not make an ad- hesive mass, but the particles remain separate and, when the mixture stands, tend to settle to the bottom like sand, leaving the water on top. There are, of course, all grades between good and poor meal, and the feeder learns by PROPERTIES AND COMPOSITION OF POULTRY FEEDS 13 A FAMILY OF WHITE TURKEY'S FORAGING ON A RHODE ISLAND FARM Turkfvs are methodical feeders, and specialists in the extermination of buss destructive to grass and grain crops. long observation to judge each of the numerous grades at about its actual feeding value. It is usually, though not always possible to get corn products of good quality, if purchasers insist upon having no other and return inferior goods when such are de- livered to them. There occasionally are seasons when early frosts stop the growth of corn throughout large sections before it is thoroughly ripe, and after such a season little corn of really good quality may be available for stock feeding. Corn and cob meal is not a common commercial pro- duct. Its use appears to be of most interest to poultry keepers who raise considerable quantities of corn, and who suppose that corn and cob meal would make a suit- able substitute for a mixture of corn meal with wheat bran. As ground at home it is usually so coarse and so overloaded with fiber that poultry will eat very little of it. As occasionally found on the market it is much finer, and appears to be a mixture of corn chop and corn bran w-ith not much, if any, of the cob in it. In general it is very poor economy to try to use the home-ground article, and the commercial product is valuable only for limited use with high concentrates. Corn bran is the coarse outer covering of the grain separated from the meal. Corn feed meal is a mixture of coarse meal and bran separated from fine table meal. Corn gluten meal, corn gluten feed, and corn germ meal are by-products of the manufacture of starch and glucose. Their comparative feed values are indicated by the state- ments of percentages of the various feed elements which they contain, as given in the table on page 23. Wheat and Wheat Products Wheat is commonly rated the best grain for poultry. Its superiority is not due to greater feeding value, but to better keeping qualities and an almost complete absence of risk in feeding. Cases of sickness from the use of damaged wheat, while not unknown, are by no means common. Large quantities of wheat that have been damaged by water are dried and sold as poultry feed. Where the. damage is slight and the wheat in fair con- dition, about as good results may be obtained as from sound wheat. Where the damage is great, as when wjieat is badly scorched, it does not seem to injure poultry, but because of its unpalatability they will not eat it freely enough to thrive or lay well on it. Wheat of good milling quality is rarely offered for poultry feed except in wheat- growing sections where it may be the cheapest of the grains available, or in small lots by growers in sections where so little is grown that there are not facilities for milling or transporting it to mills. The feed wheat on the market generally is of a grade not desirable for mil- ling, but as good as any for feeding purposes. Shrunken, shrivelled, and frozen wheat, and ordinary wheat screen- DUCKS ON THE MARGIN OF A LONG ISLAND RIVER — ATLANTIC DUCK FARM, SPEONK Ducks are often grown in dry yards, but the work is much lighter 'when they have water runs. 14 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT A MARKET POULTRY FARM IN THE SOUTH SHORE DISTRICT OF MASSACHUSETTS (Continuation of this view on page 15) ings, composed of small and broken wheat, often appear to be good for poultry feeding as the best commercial grades. As applied to wheat screenings this means clean screenings, free from large quantities of weed seeds and chaff. The red wheats are generally better value than the white, being richer in protein, which makes them harder. The best way to test the quality of wheat is by biting the grains with the front teeth. Poultry eat wheat more readily than any other grain but corn. The difference in feeding value between good corn and wheat, as noted in ordinary practice, is imperceptible. Such advantages as one or the other may appear to have in particular instances are plainly due to conditions under which it is, for the time being, the more suitable feed. Experiments made at some of the experiment stations to determine the relative values of corn and wheat have given the same conclu- sions, though it must be admitted that the methods adopted sometimes have not been such as allowed a clear comparison. However, the conclusions arrived at gener- ally accord with the observations of practical poultrymen. Wheat by-products are the parts of the grain separ- ated from flour in milling. They vary, according to the process of milling and the kind and grade of flour, to such an extent that for many years there has been great confusion in the identification of the different kinds and grades by the names that are applied to them. Since nearly all states now have feeding-stuff inspection laws, A MODEST BEGINNING The business farm shown above heg-fn in tv-is ITV-I- try house on a town lot. When Mr. H. D. Smith, Rock- land, Mass., located on the farm shown above, he took the "first poultry house" with him. and products of this kind originating in one state may be, and commonly are, shipped to many others, the officials in charge of feeding-stuff inspections have cooperated to standardize the terms used in describing them. The definitions of wheat products as agreed upon by them are: — "Wheat bran is the coarse outer coating of the wheat berry obtained in the usual milling process from wheat that has been cleaned and scoured." "Shorts or standard middlings are the fine particles of the outer and inner bran separated from bran and white middlings." "White middlings or wheat white middlings are that part of the offal of wheat intermediate between shorts or standard shorts or standard middlings and red dog. This term correctly applies to high grade middlings, low in bran content, thus being highly digestible. An off-grade flour which contains 2.5 per cent or less of fat and 13% or less of protein should not be confused with white middlings." "Wheat mixed feed or ship stuff is a mixture of the products other than flour obtained from the milling of wheat." "Red dog is a low-grade wheat flour containing the finer particles of bran." In the feeding of poultry the wheat products are gen- erally combined with other milled feeds, principally the corn products, though oat products are often used also. The most common commercial form is the mixed feed or ship stuff. Where "mixed feed" is mentioned as an in- gredient of mashes this is what is meant unless it is specified that the reference is to one of the many mixtures of different grain products put out by dealers as complete feeds. These last would be more appropriately and plainly described as mashes. Bran alone has little nutritive value and is obviously not attractive to poultry. Mixed with fine corn meal it gives desirable bulk to the mass, prevents it from packing in the crop, and supplies mineral elements in which the corn meal is lacking. Middlings mixed alone with water make a sticky, pasty mess. When bran and middlings — wheat mixed feed — are mixed with water, the consistency and palatableness are improved but still are not as good as when corn meal is added. A combination of these three ingredients, with a little meat meal added, gives a simple mash, of ingredients almost everywhere obtainable, and one of high efficiency. Hence the corn and wheat pro- ducts are the usual base in standard mashes, variations and substitutions being made to utilize other ingredients that may be locally or occasionally more economical. Fur- PROPERTIES AND COMPOSITION OF POULTRY FEEDS JT 15 MARKET POULTRY FARM — SHOWING COLONY HOU (Continuation of ther discussion of this is deferred until the methods of feeding are taken up. Oats and Oat Products The value of oats for poultry feed is extremely vari- able. Heavy oats with plump, full kernels and thin hulls ;ire quite equal in value to corn and wheat. A moderate amount of hull does not seem to reduce either their palat- ability or their nourishing properties, as compared with vhat the birds will eat readily of the other grains men- fioned. In the British Isles oats are commonly rated the best of grains for poultry, and many American writers, following English authority, have unstintedly praised oats, and as unsparingly condemned corn as poultry feed. The reason for the preference for oats in England is that the oats produced in the British Isles are uncommonly good, while the climate is unsuited to corn. In America, on the contrary, most of the oats produced are of medium to poor quality, while good corn may be grown almost everywhere. In the South oats are almost always poor and light. Tn the Northern States the quality is much better and the production much greater, yet enormous quantities of oats that seem to be entirely suitable for horse feed, are of-little value for poultry feed. Canadian oats are, on the whole, better than our best northern oats, and the English opinion of the value of oats in poultry feeding is more applicable there than on this side of the boundary line. Another reason for the English objection to corn is that it makes yellow fat in poultry, whereas their markets prefer white fat. The ordinary examination of oats for quality is made by simply removing the hull from the grain. Anyone who has been feeding oats without examining them, and has perhaps wondered why his poultry did not appear to like oats and would eat little even when kept short of other grains to compel them to do so, will be surprised, when he examines an ordinary sample of the oats he has been feeding, to find how few grains contain large plump ker- nels, and how many are almost entirely hull. It does not pay to buy oats for poultry unless they are good enough so that the birds, eat them readily as a part of a mixed- grain ration. Hulled oats make good poultry feed, but the price should not be higher than good feeding wheat. Ground oats and mixtures of oats with other ground grains are common feed articles. Their value in either case depends upon the original quality of the grain, and the freedom of the mixture from additions of surplus oat offal from other sources. It is not possible for anyone to say positively upon inspection whether a sample of ground oats or mixed feed including ground oats, having an ex- cessive amount of hull, was made of very poor oats, or S'ES FOR GROWING CHICKENS ALL THE WAY BACK view on page 14) was adulterated. The only question that really concerns the buyer is whether the proportion of hull is greater than desirable in a poultry feed. If it is, he should reject the article, for the excess of hull makes it an undesirable — an expensive and a dangerous feed. The hull in ground feeds, beyond a very small amount, is highly irritating to the in- testines of poultry, and dangerously so in young poultry. On the other hand, good ground oats, reasonably free from hulls, are a desirable and valuable feed to use either separately or in mixtures. So the intelligent and econom- ical use of oats is a question of obtaining a good article at an appropriate price. Rolled oats and oatmeal are widely recommended as superior feeds for young chick- ens. They are good feeds when not stale, but whether they are the best feeds to use in any case depends uporu the quality and prices of other available chick feeds, and! especially upon whether the corn obtainable is good and safe to feed. Barley and Barley Products Barley as a poultry feed occupies a place between wheat and oats, as to its palatability, but is much less generally available than the other grains so far considered. Nowhere but on the Pacific Coast, where the bulk of our crop of barley is grown, is it regularly available for poul- try feeding. In the markets throughout the rest of the country the supplies of barley are irregular and the prices compared with those of the grains to be had in abundance are inclined to be erratic. This last feature is probably due to the readiness of poultry keepers to pay a premium for a grain that is rather scarce, thinking that they can afford to do so for the sake of giving variety to the ONE OF THE COLONY HOUSES ON FARM OF H. D. SMITH 16 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT ration. If poultry keepers generally would make a study of the relative feeding values of grains as apparent by the proportions of hull and waste that they contain, which can be determined by ordinary inspection, and then buy ac- cordingly, the prices of all sorts of grains would soon be properly adjusted to the price of corn, which under normal conditions is nearly everywhere the cheapest grain obtainable Barley and wheat have about the same nutritive value, except that barley contains a larger percentage of fiber, the grain having a hull. Hulled barley and wheat should be bought for poultry feed at the same price. Barley witii the hull is usually worth 10 to 15 cents a bushel, or 15 to 25 cents a hundred, less than an ordinary grade of feed wheat. The proportion of hull varies greatly, just as it does in oats, though good barley is much plumper than the best oats, and the poorest barley is rarely as poor as a large part of the oats on the market. Poultry that have never had barley sometimes scour badly if suddenly changed to a diet containing much of it, but the trouble r rally disappears within a few days. If it does not, it CHICKS IN BROODERS IN GRASSY YARDS' AT GRANDVIKW FARM, AURORA, N. Y. — GRAIN GROWING IN FIELD BEYOND may fairly be assumed that some other things in the ration or in the conditions to which the birds are subjected need attention and co.rection. Brewers' grains and malt sprouts, though commonly described as poultry feeds, are not generally used for that purpose, their chief use being as cattle feeds. The prohibi- tion of the manufacture of liquors in the United States will take this class of products off the market, and it is entirely problematical whether barley will continue to be grown in quantities that will make it an important item for poultry feed. Its prime use has been for brewing, and its availability for stock feeding has depended upon the amount of surplus over what the brewers could use. Rye and Rye Products Rye is produced in America in much less quantity than any other of the common grains. The chief use of the plant here is for green forage for all kinds of live stock, and for the straw which is especially valuable for bedding and litter by reason of its length and extreme toughness. During the recent war period rye flour was extensively mixed with wheat flour for human food, and the value of rye in feeding animals appears to be greater in mixtures with corn than when the attempt is made to feed rye or rye products alone. Rye is said to produce digestive disorders, and anyone not accustomed to it who will eat a little pure rye bread will discover that it has in much greater degree the acrid properties sometimes noted in oat preparations. In parts of Europe where rye is more extensively grown than here, it is used for feeding all kinds of live stock, but authorities on feeding in those countries advise against feeding it alone, and also say that it gives better results fed cooked than when given raw. On the whole, the American poultry feeder need not con- cern himself much about this line of products. If he has rye on hand or can get it cheap he can use it in a limited way with other ingredients. Buckwheat and Buckwheat Products Poultry seem to like buckwheat in limited quantities, but not to care to make a full meal of it as they do of corn, wheat, or good oats. There is not much buckwheat available for poultry feeding in this country and what there is, is often of inferior quality, which perhaps ac- counts for the reluctance of the birds to eat it freely. In Europe, and particularly in France, buckwheat and its by-products, groats, bran and middlings, are much used in feeding poultry. French buckwheat is said to be superior to that grown in England. Some poultrymen here occasionally grow buckwheat on land they want to freshen, and use the unthreshed straw as litter, letting the poultry feed on the grain as they thresh it out by scratching. This practice might profitably be followed much more widely than it is. Miscellaneous Grains and Seeds Broom-corn seed, sorghum seed, f axseed, cottonseed, kafir corn, millet, rice, etc., are suitable for poultry feed, but are not generally obtainable at prices that compare favorably with the common staples. Broom-corn seed, hulled, has given as good re- sults as wheat .after the fowls be- came accustomed .to it. Kafir corn is now grown quite extensively on the dry lands of the Southwest and Far West, and there is an increasing use of it as poultry feed in and near the places where it is grown, but elsewhere supplies of it are irregular and, as a rule, the prices asked are too high. In warm climates that are too dry for corn, poultrymen should use kafir corn in the yards and on available land, just as corn is used in places that suit it. Millet has not the value commonly attributed to it as poultry feed. Large birds eat its small grains reluctantly, and chicks thrive best if the amount of millet in their diet is limited to what they will take when well fed on grains that they like better. Any attempt to force them to eat considerable quantities of millet leads to underfeeding and restricted growth. Used moderately as an extra, it is a good feed, but even so it is not an economical feed unless the price is close to the price of corn. . Rice is an excellent feed for poultry, but the produc- tion of it in this country is so small, as compared with that of the common field grains adapted to general cul- tivation, that the amount used is insignificant. It consists mostly of broken and damaged rice, principally in prepared chick feeds. In this form rice may be given with entire freedom. There is no risk in its use, but the rice by- products (bran and hulls) should be' given with more care. The bran is apt to contain a large mixture of hulls which are not only worthless, but may be injurious. PROPERTIES AND COMPOSITION OF POULTRY FEEDS 17 Cottonseed and flaxseed are of interest to the poul- try feeder chiefly for their by-products. The primary commercial value of these seeds — apart from their value for planting — is in the oils extracted from them. In this process the seeds are pressed into cakes containing all the other elements and the residue of oil which the process did not remove. The earlier processes of extracting such oils, left in the cake a high per cent of fat, but improved processes have so reduced this that the meal into which the flaxseed cake is ground before being placed on the market as a feed is very low in fat. Cottonseed meal is much higher in fat, because the oil is not so greatly in demand as linseed oil. The chief value in commercial oil meal is the protein it contains while cottonseed meal is rich in both protein and fat and, since meat by-products have risen to unusually high prices, there is an increasing use of both for poultry feed. A number of experiment stations have studied the relative values of cottonseed meal, and meat scrap, and the general conclusion arrived at is that it is a valuable substitute for meat scraps when According to tradition, sunflower seed is a valuable feed for poultry, a little of it added to the ration being (so it is claimed) peculiarly valuable for hens while molt- ing. This appears to be another of the cases where the apparent value of a feed depends upon the combination in which it is used. In a ration lacking in fat, plump, well- filled sunflower seeds given as liberally as the fowls would eat them, would undoubtedly show marked bene- ficial results, but ordinary observation cannot discover any advantage in feeding them to birds that have a liberal amount of corn and of meat scrap or oil meal. Much of the sunflower seed given to poultry is immature and con- tains little nutriment— so little that well-fed birds will hardly touch it. If one buys sunflower seed he should examine it to make sure that there is something more than hull, and he should keep in mind that an average good sample is about one-third hull, and the actual nutritive value less than that of corn. A little of such an article is useful for the sake of variety, and for that purpose it may be worth a little more than the staple grains used in COLONIES OP WEANED CHICKS IN ORCHARD ON A NEW YORK FARM— AN IDEAL PLACE TO GROW CHICKENS Windfall apples make good feed and the chickens destroy insects that would spoil fruit. only ordinary results are sought, but when the best re- sults are desired meat scraps are more efficient because they are more palatable. Hence the partial substitution of cottonseed or linseed meal for meat scraps appears as the best method of securing maximum production at min- imum cost, when meat products are high and these con- centrated meals .relatively cheap. The substitution of one of them for half the meat scrap in a ration does not ap- pear to make it less palatable to the birds, or in any way to diminish its feeding value, and the saving in cost, while small on one day's ration makes quite a substantial amount when applied to long periods and large flocks. Most kinds of poultry are fond of peas but care little for beans. This seems quite singular in view of the fact that in their composition these two seeds are much alike — as far as principal feed elements are concerned. It is also remarkable that beans — one of the most universally popu- lar human foods, have no attraction for poultry in their raw state, while peas are eaten greedily. Most kinds of poultry will eat raw, dry beans only under pressure of great hunger, and then only in limited quantities. Thor- oughly cooked beans they will eat freely and with apparent relish, and they also readily eat bean meal when mixed with other mill products. the ration, but it is extravagant to pay several times the common prices; for such extras, as poultry keepers fre- quently do. . Vegetable Feeds Vegetable substances used for feeding poultry, other than grains and their products, may be divided into two general classes; leaves and forage, and roots and fruits. All kinds of poultry will eat tender, succulent green stuff in much larger quantities than are generally given to them in confinement, but a great many things of this kind they care for only in their tender stages of growth, eating them at other stages only when nothing else of the kind can be obtained. Cabbage is the most useful vegetable of this class for poultry feeding, considering its keeping qualities and the possibility of having supplies through almost the entire year. For feeding as cut,, or for growing in poultry yards where the birds can eat of it at will, rape is popular. Let- tuce is perhaps the favorite with the birds, but as a rule the only lettuce that can be profitably fed to them is that which has passed the stage at which it is used for human food. These three things poultry will eat regularly and freely. Most of the common root crop tops, such as beet 18 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT leaves, onion tops, etc., they eat in small quantities when tender, fresh and crisp, but do not care much about when tough or wilted. Grass that is kept short, and all kinds of leaves of weeds growing in such grass, are eaten by poul- try with great relish and in surprisingly large quantities; but as soon as any such vegetation gets a little hard and tough they eat it sparingly if anything else more succu- lent can be obtained. Of roots, the most useful for poultry feeding and the one most widely grown expressly for the purpose, is the mangel-wurzel beet. After this come sugar beets and large table beets. Turnips are widely used, but as they some- times give an unpleasant flavor to eggs poultrymen have to be more cautious in feeding them. The bad flavor from turnips seems to be due sometimes to the "rankness" of turnips grown on strong land, and sometimes to the birds- eating partially decayed turnips. Stock carrots, table carrots, potatoes, and onions all BREEDING DUCKS AT ATLANTIC FARM, SPBONK, L. I. These ducks can get a good deal of animal feed from the water, and therefore do not need extraordinary amounts of it in their ration. make good poultry feed. The question of their use is a matter of availability or cost. Where there is a 'surplus of such stuff of unmarketable grade, it is cheap poultry feed. If it has to be bought, the price should be based not on the value of the marketable stuff of the same kind for human food, but on the value of the waste product in comparison with the staple poultry feeds. This point will be explained more fully in connection with the dis- cussion of the values of feeds as shfjwn by the general measurement of nutritive value. Of common fruits the apple is most generally avail- able for poultry and has the advantage that spotted and bruised fruit will keep much longer than similar fruit of peaches, pears, and plums. None of these things need go to waste if there is poultry to which they may be fed, and birds that have at the same time free access to corn or wheat and to any of these, seem to get a well-balanced ration. Tomatoes are in the same class with the things just mentioned, but rather lower in actual feeding value. Cucumbers and all kinds of melons are greedily eaten by poultry. Clover and Alfalfa As poultry generally do not care for green grass after it becomes a little hard and tough, hay to be at tractive to them must be made from grass cut at the stage at which they prefer it, and cured to preserve the green color. Clover and alfalfa are most suitable for this purpose, and are more conveniently handled and fed when ground into meal or cut very finely. While there is not much difference in the feeding value of the two when both are of like grade, the weather generally in alfalfa-growing sections is more favorable for curing than in clover-grow- ing sections. Hence a much larger proportion of the alfalfa is nice in color, and in every way attractive, and alfalfa tends, steadily to displace clover in the poultry ration wherever they come in competition. Animal By-Product Feeds There are two sources of supplies of this kind — loca supplies consisting of the wastes and trimmings from small butcher shops, from the family table, and perhaps an oc- casional old horse; and the general commercial supplies put up in convenient form and ready for use, by all classes of packing plants handling meat and fish products. Supplies from local sources are generally limited and ir- regular. At the same time they are often the most desirable to use as far as they will go, if they can be ob- tained at reasonable prices and their preparation for use does not involve too much time and labor. Except for small flocks, local supplies as a rule are of little consequence. The multi- plication of poultry keepers in towns and suburbs tends to divide avail- able local supplies until the amount that any one poultry keeper can get becomes so small that it is hardly worth his while to look after it. He finds it much more convenient to buy, in quantity to suit his needs, meat scrap, meat meal, dried blood, fish scrap, and other similar preparations which will keep indefinitely, and are always ready for instant use. • Nearly all experienced poultry keepers consider green cut bone, which usually has with it considerable fresh meat, the best of animal feeds for poultry, and the one which supplies the additional mineral matter needed in most palatable form. But few poultry keepers that have large stocks can get anywhere near as much of this as they could use, and unless they have a power cutter they are apt to prefer prepared feeds exclusively, for while cutting bone for a small flock is good exercise, the man who cuts on a large scale needs to be properly equipped for it. Meat and fish by-products as sold for poultry vary considerably in composition. Dried blood and blood meal are largely albumin, but most of the brands of meat meal on the market are high in fat. As far as YOUNG DUCKS REARED WITHOUT ANIMAL, FEED Same age, and originally same number as flock on opposite page. PROPERTIES AND COMPOSITION OF POULTRY FEEDS 19 feeding quality goes, practically all are valuable additions to the ration, and the choice — if there be any — between brands of different composition is a matter of price as compared with content. The .best way to compare values is on the reports of their composition as published by the experiment stations which are by law authorized to analyze feeds and to publish the results for distribution to consumers in their states. It is a noteworthy fact that the greatest danger in using this class of poultry feeds comes from the fre- quency of their containing much more protein and fat than the manufacturer has given on his label or bag as his guarantee. The manufacturer does this for his own protection against the possibility of many lots of goods running below the guarantee if he places that too high, since he cannot in a waste product of this kind make uniform quality as he would in a standard product. The consumer not being informed of the situation assumes that the guarantee gives exact composition and uses it accordingly. Manufacturers t h e m- selves sometimes advise the propor- [~ tion of an article to use, basing it on their guarantee. This is a mistake in the case of a high concentrate of va- riable quality, for it often leads the user to put into a mixture more than should be used, considering other ele- ments in his ration. Then if bad ef- fects develop the feeder supposes that there is something injurious in the feed, when the whole trouble is that he is regularly using a little too much of it. The question of feeding value in feeds of this class cannot be determ- ined by the agreeableness or dis- agreeableness of the odor. Some have a rather agreeable odor when moistened — especi- ally when mixed with hot water. Others have a dis- agreeable odor — rather suggestive of fertilizer. It is natural to conclude that the better smelling article is in every way better, and poultrymen generally are in- clined to give it the preference; yet it happens again and again that when they cannot get the article they prefer, and are compelled to use one that on odor they pronounce less desirable, they find it in every way as satisfactory as the other. Occasionally a lot may be damaged in some way so that it is unpalatable and unfit to feed, but in general what the chickens will eat readily will not injure them, unless an excessive quantity is given, and the proof of quality is in the results. Nearly all meat scraps and fish scraps contain considerable amounts of mineral matter. Milk and Milk Products Milk in any form is good poultry feed. If it appears to have bad results in any case the trouble can usually be located in an undesirable combination of something else with the milk, or in extreme susceptibility of certain birds to the effects of such changes as from sweet to sour milk. The general statements that have been put out as to the inadvisability of feeding both sweet and sour milk, as to peculiar virtue for sour milk, and as to bad effects of sweet milk, are all based on limited observation and special instances, and some of the most widely quoted of them were soon corrected by those issuing them, but the error always seems to spread faster than the correction. A poultry keeper may find that milk, or milk in a particular form, does not agree with his birds or with some of them. The logical thing to do is to investigate, in order to find the reason and to correct it, for when milk seems to disagree with poultry there is something else to be corrected. It may be that the amount of meat in the YOUNG DUCKS GROWING FOR MARKET AT ATLANTIC FARM In such numbers the ducks each get little of the animal feed in the water, and must have heavy proportions of meat in their rations. ration is excessive in connection with the amount of milk used. In one case observed, where sweet skim milk was said to scour laying hens, the trouble was that, with a dry mash containing a large proportion of nice alfalfa meal, and the vessel of milk standing close to the feed hopper, the hens ate mash and milk so freely as to pro- duce the peculiar looseness of the droppings that goes with heavy feeding of green alfalfa. If milk seems to have bad effects there is always a reason, and usually a simple, easily remedied one. Skim milk and buttermilk are the forms in which milk is commonly available. Regular supplies of these are generally to be had at really low cost only on farms where butter is made, or in the vicinity of creameries. At present there is a partly solidified form of buttermilk on the market that is very good for poultry feed. This "semi- solid buttermilk" as it i's often called, is given to chicks at all stages of growth and is considered especially de- sirable for them, as milk is believed to have an excep- tionally favorable effect upon growth. Many poultry feed- ers supply semi-solid butter- milk also to laying fowls, while it is regarded as al- most essential in rations for special fattening. As a drink for chicks it usually is di- YOUNG DUCKS REARED ON HIGH PROTEIN MEAT SCRAP Same age as those on opposite page. 20 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT • , FARRER BROS.' MARK: FLTRY FARM, WEST NORWELL, MASS. — ONE OF THE PLANTS OF THIS CLASS, ESTABLISHED ABOUT 1890 FIRST SUCCESSFUL LARGE Heavy production of poultry on a small area has at times made it necessary to limit operations with poultry and purify the soil by raising- vegetable crops — after which it can be again used for poultry. The nearest thing- to a "panacea" for poultry diseases is CLEAN LAND. luted with water, but may be given to hens just as it comes from the barrel in which it is shipped. At various times in the past milk products in dry form, convenient and desirable for poultry feed, have been put on the market. Everything of this kind is good for poultry. The question of feeding any particular article is the question of price. A number of milk by-products have been withdrawn from sale as poultry feeds after their reputation had been well established, because the manufacturers had devised a way of preparing them for human food and could dispose of them for that purpose at higher prices than they could obtain for stock feed. Mineral Feeds The most important of the mineral feeds is oyster shell. Hens that are well supplied with it do not seem to require anything else to provide material for egg shells, nor will they (in the writer's experience) con- sume any appreciable amount of indigestible grit when that is supplied on the theory that it is necessary to aid the gizzard in grinding the feed. Any shell or lime in form that it can be fed to birds seems to an- swer the purpose of supplying min- eral elements needed, and it would appear that on soils containing much finely broken stone, poultry are able to get from such matter all the mineral elements they need for the ordinary purposes of growth and maintenance. Both young and old stock on good range appear quite in- different to special supplies of bone or shell, except as material is plainly needed for egg shells. Under other circumstances, especially when quite limited for range and on ground that has been long used for poultry, and perhaps overstocked with it much of the time, the use of considerable amounts of bone meal in the feed of growing poultry has shown marked beneficial results. While ground oyster shell is the most generally available of things of that character, very small sea shells which can be eaten without grinding are just as good, and are largely used by poultry keepers living near the seashore. Poultrymen in places where such shells are abundant sometimes do a considerable trade selling this material within convenient shipping distance. There are also in some inland localities beds of infusorial earth an deposits of chalky or giavelly stone which disintegrate easily, and this material seems to supply all the minera feed requirements of poultry. In general practice it is better to supply materials of this kind separately, so that the birds can take as mucl as their appetites seem to require, than to undertake tc mix them with the feed in any definite proportions. can be mixed with ground grains only when in the forr of meal, as bone meal, or finely ground oyster shell. Fee in this way they frequently cause irritation of the in- testines. In some experiments in the use of ash and grit for chicks, sand has appeared to be as effective as bone or shell, and some have inferred from this that it was the gritty character of materials of this kind rather that their digestible elements that made them valuable tc poultry. That conclusion however ought not to be ac- A LONG This is the building BROODER HOUSE ON FARRER BROS.' FARM at the extreme right (and only partly seen) in picture above. cepted without inquiry into the character of the "sand" used, and the possibility of its dissolving into small par- ticles, and — in fact — being digestible. Coarse sand mixed with poultry manure that afterwards stands for a long time sometimes entirely disappears, not a trace of the grains of sand remaining. The processes of digestion PROPERTIES AND COMPOSITION OF POULTRY FEEDS 21 might have the same effect, and perhaps reduce the sand much more speedily. Division of opinion as to the function and need of grit need not confuse anyone as to the course that he should follow in feeding. All admit that some digestible SMALL COLONY HOUSE USED FOR CHICKENS AFTER LEAV- ING THE BROODERS, ON FARRER BROS.' FARM In these 6x8 ft. houses fifty winter chicks are carrier to mar- ketable size for large roasters. The window is never closed, and the door open nearly all the time, day and night. mineral matter is needed. If poultry are constantly sup- plied with oyster shell and granulated bone they will cer- tainly get all of it that they need, and a small supply of a grit that is certainly indigestible will then be found to last indefinitely. If the grit provided is eaten freely by birds that have plenty of shell and bone, it may be con- cluded that it is valuable as a source of supply of similar mineral elements. Commercial Mixed Feeds — Their Place in Feeding Economy The foregoing discussion of feeds has been confined quite closely to feeds in their natural forms or as simple by-products. There is a large class of mixed feeds formed by combinations of both whole feeds and by-products that is of great interest and calls for special attention. It is of considerable importance to the poultry feeder to have a correct understanding of the place of these feeds in good feeding practice, and of the extent to which he can use them to advantage, and also of the nature of the service performed by the manufacturers of such feeds, and of the means for protecting consumers against misrepresentation aii'i adulteration of a class of feeds which offers special teirpiations to manufacturers or dealers inclined to be dishonest in preparing or handling feeds. Commercial mixtures of ground feeds are made gen- erally and primarily for the sake of adding to by-products of grains used for human food the elements that will sub- stitute in a stock feed for those that were taken out. Thus one of the oldest mixtures, called provender, com- bined coarse bran with ground corn and oats. As by- products became more numerous and abundant, it was to the mutual interest of the manufacturers and of a large class of those who used them, to make mixtures of feeds for special purposes at the mills. With the increasing use of mixtures of ground feeds there came a demand also for mixtures of grains — whole and cracked. This demand came in the first place from small poultry keepers who did not want to buy numerous different articles in small lots, at the highest retail prices, and also — to some extent — from poultry keepers buying on a larger scale, who were not disposed to take the trouble of studying out the most desirable combinations for themselves, or who, when they did so and tried to make their own mixtures, found 'more or less difficulty in obtaining supplies of cer- tain articles wanted. It was the demand of these classes of poul- try keepers that led to the extensive manufac- ture, advertising, and sale of commercial brands of poultry feed. The high grade and generally uniform quality of the popular stand- ard brands of both mash and scratch feeds for poultry has led to their extensive use among poultry keepers who do not use them exclusively, because their cost as a rule is higher than that of average feeds the poultry- man mixes for himself, but who find the com- mercial mixtures especially desirable for young poultry, and the most economical means of supplying more variety in grains than the stocks of local grain dealers afford. In fact it is the absorption of nearly all desirable sup- plies of miscellaneous grains by the plants that manufacture commercial poultry feeds, that keeps these out of the general market. While the special commercial mixture of scratch feed has a variety of grains not easily obtained in any other form, and is therefore of peculiar value to poultry keepers whose stock is restricted for range, it is also highly valu- able because of the uniformly high quality of the corn which is the basis and the greater part of most such mix- tures. One of the greatest troubles in poultry feeding in America is to get good cracked corn, bright, clean, and free from mold in warm, damp weather. The difficulty has been greater in recent years because of the extent to which farmers all over the corn belt, in their eagerness to get large yields, have planted slow maturing corn, the growth TYPE OF POULTRY HOUSE USED FOR GROWING SOFT ROASTERS ON A SMALL SCALE These houses are detached, and each has its own small yard withhi a large yard. This admits of closer control of the chickens especially while small. Many persons with a few small houses of this type, or a little larger, hatch or buy several hundred chickens late in the season, to be sold when prices are highest in the spring. From such small plants nearly all successful large ones have grown. 22 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT of which often is checked by early frosts, making enor- mous quantities of soft corn which is not desirable for meal or to crack, and which deteriorates quickly after milling. The large manufacturer of poultry feeds partly avoids the dangers of using poor corn by buying in corn- growing sections the best corn obtainable, and further overcomes them by artificially drying the corn before giinding or cracking it. After a season like that of 1917 when it was estimated that fully sixty per cent of the corn grown in the United EMBDEN GEESE GRAZING There is an old saying- — "a goose eats everything before it and spoils everything behind it." This is true . only when they are given poor pasture. States was soft, even the large feed manufacturers must use some soft corn, but as what they use is dried it is far superior to the greater part of the corn on the market, and will keep in good condition for more months than the ordinary run of goods will keep weeks. The poultry keeper who finds his local supply of cracked corn un- reliable or undesirable buys at least enough of a popular standard commercial mixture to provide against the con- tingency of being unable to get good corn locally in hot weather. Hence, while peihaps comparatively few large poultry keepers use commercial mixtures exclusively, practically all buy them in large quantities. The popularity of widely known commercial mixtures, both mashes and scratch feeds, and the frequency with which the demand for them outruns the supply, leads mil- lers and dealers in all localities to imitate them, or to offer substitutes of their own compounding. While in some instances these may be as good as the originals, in general they are not, for the corn products in them are 1'kely to be the same inferior articles which the poultry keeper wishes to avoid. The best way 'for a poultry keeper to keep informed as to the values of all supplies on the market is through the report of his experiment station upon the different brands of commercial feeds sold in his state. A list of the experiment stations will be found on page 111. These reports protect both the consumer and the honest manufacturer. From what has been said the reader will see that the question of buying commercial mixtures, or of buying the ingredients separately and making his own mixtures, de- pends upon the conditions under which his flock is kept, upon the quality and regularity of local supplies, and upon his own inclination or ability to judge of the values of feeding stuffs as found on the market, and to com- pound rations. Stock on good range, with abundance of green feed and natural animal feed may eat soft corn or somewhat heated corn without being any the worse for it, and will not suffer for lack of more variety in giains, while stock in bare yards will quickly show the effects of poor corn, and is more cheaply fed on a good commercial mixture than on a variable supply as selected by a keeper who pays little attention to the quality of the feeds delivered to him. Condimental Poultry Feeds Condimenta! poultry feeds are preparations in which articles having stimulative and tonic properties, and others of some value in the treatment of common ail- ments, are mixed with a base or filler of some common feed suitable for the purpose, the preparation to be used in small quantities in the mash. The regular use of such preparations parallels the use of spices, seasonings, and mild stimulants and correctives in human diet. That some use of such things is necessary is a matter of com- mon knowledge. The real questions at issue between those who advocate and those who discourage the use o proprietary articles of this class are, whether this is th most economical way to give stimulants, tonics, and cor rectives regularly, and whether it is better to use them a general remedies, on the poultryman's own judgment, o to treat cases of disease each in accordance with its pecu- liar needs, and upon competent medical advice. Especially stimulating preparations known as eg; foods have to the present time been the most generally effective substitutes. for the high seasoning and spicing in human diet, which gives to ordinary table waste much of its special palatableness and value as poultry feed; one reason for this is found in the simple fact that a great many poultry keepers who are careless about supplying these things as seasoning to make a ration more palatable to the birds, will be very faithful in giving the same in- gredients, with others of a stimulating nature, when the diiect purpose is especially to stimulate egg production. Again in stock of low vitality, and quite generally in stock of ordinary vigor in long seasons of raw, chilly weather, and when birds seem inclined to molt slowly, the use of such preparations is commonly attended with marked beneficial results, and on the whole the use of those having medical value is probably much safer for the aveiage poultry keeper than to attempt to treat his stock for a particular disease with a particularly appropriate remedy for it. To get medical advice for poultry that seems some- what out of condition is not often practical. Except where the stock is valuable and something seems to be seriously wrong, the expense of securing advice either from a doctor or an expert poultryman competent to treat the situation is prohibitive. So while a poultryman who has some skill in the diagnosis of poultry ailments, and some knowledge of the particular remedies for each, may use his special knowledge rather than a general remedy, the average poultry keeper is more successful, as a rule, in the use of feeds with condimental and some A FAMILY OF RHODE ISLAND "MONGREL GEESE" — WILD GANDER, AFRICAN GOOSE1, AND FOUR CROSS-BRED GOSLINGS These are considered the finest of table geese. They are grown mostly on grass in good pastures, grain be- ing fed in very limited amounts, except by those who- buy and finish them for market. PROPERTIES AND COMPOSITION OF POULTRY FEEDS 23 medicinal properties which tone up the birds, help di- gestion, regulate the bowels, and help nature to resist and throw off specific troubles that may be developing. The practical thing for a poultry keeper who thinks perhaps his poultry would be the better, regularly or oc- casionally, for something of this kind is to try it out. He can demonstrate for himself whether there is an ad- vantage to him in using it, and if he finds that there is, he can decide for himself whether it is better for him to continue its use, or to make such changes in feeding and conditions that there will be no occasion to use them to the same extent. Kitchen and Table Waste as Poultry Feed Under this heading should be included the kinds of feeds that come from the table, whatever their source. Thus we have all sorts of garbage from hotels and restaurants, and waste bread, broken crackers and the like from bakeries. None of these things come on the general market. The refuse from cracker factories is the only article of the sort that can be bagged and handled as staple feeds are, and this is nearly all bought up in advance by the large duck farms. What they may leave is taken by poultrymen near the factories. Stale bread is usually sold to near by poultrymen or, in metropolitan districts, it may be collected by men who peddle it out in lots of a few bags to suburban poultry keepers. The higher class hotels and restaurants now usually either have their own farms where their waste is fed to poul- try or hogs, or their waste is taken by someone who uses it for feeding hogs, as also is most of the waste from cheaper hotels and restaurants. The obstacle to getting for poultry what is desirable feed for them in this waste is that it requires separating what the poultry will not eat, and disposing of it for swine. As feeders of swine will take everything, keepers of hotels and restaur- ants who have not farms of their own will not go to the trouble of keeping waste in such manner that ptmltry keepers can use it. So with the exception of occasional supplies of stale bread, the average poultry keeper's use of this class of feeds in closely limited to what comes from. his own household. Eggs Of by-products of the poultry yard only infertile eggs and those in which the dead germ has not yet decomposed are available for feeding, and their use is generally limited to feeding the chicks the first few days. Infertile eggs that can be tested out at the third or fourth day, as can readily be done with white-shelled eggs, are as good for culinary purposes a-s ordinary stale eggs, and even eggs tested out after seven days of incubation are marketable for some purposes, so that the feeding of infertile eggs is less common than some years ago. Analyses and Nutritive Values of Articles That Are or May Be Fed to Poultry , F oi ______ ~3 .23^ cj CD 3 oj 3 o3 ... CCttlPn fefc £K fe> Corn and corn products Field corn 10.9 1.9 1.5 10.4 70.3 5.0 1:7.9 106 Sweet corn 8.8 2.8 1.9 11.6 66.8 8.1 1:7.5 111 Pop corn 10.7 1.8 1.5 11.2 69.2 5.2 1:7.3 107 Small and immature field corn 35.7 1.0 0.9 7.3 50.7 3.5 1:8.1 68 Cracked corn 12.3 1.3 8.6 73.9 b 3.9 1:9.5 103 Corn bran 9.8 6.3 2.6 10.7 63.2 7.4 1:7.3 105 Corn meal— unbolted 12.0 2.2 1.3 8.7 74.1 4.7 1:9.5 104 Corn meal— bolted 12.0 1.2 1.0 8.9 72.0 4.9 1:9.5 106. Corn meal— granulated 12.5 1.0 1.0 9.2 74.4 1.9 1:8.6 102 Corn and cob meal 15.1 6.6 1.5 8.5 64.8 3.5 1:8.6 94 Corn germ meal 10.7 4.1 4.0 9.8 64.0 7.4 1:8.4 105 Hominy meal 11.1 3.8 2.5 9.3 64.5 8.3 1:8.7 108 Gluten meal _ 9.6 1.6 0.7 29.4 52.4 6.3 1:2.3 111 Gluten feed 8.1 6.4 1.3 23.2 54.7 6.3 1:2.9 107 Wheat and wheat products Wheat 10.5 1.8 1.8 11.9 71.9 2.1 1:6.3 102 Wheat screenings 11.6 4.9 2.9 12.5 65.1 3.0 1:5.8 97 Wheat bran 11.9 9.0 5.8 15.4 53.9 4.0 1:4.1 90 Wheat middlings 12.1 4.6 3.3 15.6 60.4 4.0 1:4.7 98 Red dog flour „.... 9.5 2.1 3.0 16.9 63.9 4.6 1:4.4 106 Low grade flour 10.6 1.1 1.4 13.3 71.5 2.1 1:5.7 104 Mixed feed (bran and middlings) 10.6 Oats and oat products Oats ..11.0 9.5 3.0 11.8 59.7 5.0 1:6.1 96 Oatmeal .. ™ 7.9 0.9 2.0 14.7 67.4 7.1 1:5.8 113 Oat bran 7.7 19.3 3.7 7.1 57.9 2.3 1:8.9 81 Oat feed 8.2 12.5 4.2 12.6 56.3 6.2 1:5.7 96 Oat middlings 9.2 3.8 3.2 20.0 56.2 7.6 1:3.7 108 Rolled oats 8.4 1.9 15.0 66.6 7.5 1:5.7 114 Barley and barley products Barley 10.9 2.7 2.4 12.4 69.8 1.8 1:6 100 Barley screenings 12.4 7.6 3.6 12.2 61.6 2.6 1:5.8 92 Barley meal 11.9 6.5 2.6 10.5 66.3 2.2 1:6.8 93 Malt sprouts— dry 10.2 10.7 5.7 23.2 48.5 1.7 1:2.3 87 Brewers grains 8.2 11.0 3.6 19.9 51.7 5.6 1:3.3 97 Brewers grains— wet 75.7 3.8 1.0 5.4 12.5 1.6 1:3 24 9.7 3.6 12.0 59.9 4.2 1:5.8 94 Explanation of the Feed Table and of the Method of Using It The first column in the table gives the amount of water In each article. All feeds have some water. The com- mon grains when dry and whole have about ten per cent of their weight in moisture. When ground or cracked, the percentage of water is slightly in- creased. Green feeds generally have nearly 90 per cent of their weight water, but there is considerable varia- bility in the table, and in many cases the difference in water appears to be due to difference in condition at the time of analysis, one of the articles being more dried or more mature in growth than another, rather than to actual differences in composition — as far as moisture is concerned. The amount of water in a feed does not affect its nutritive value, but may af- fect its cost value. The second column gives the per- centage of fiber. A single glance at this column is all that is necessary -to show whether a feed has an objection- able proportion of indigestible fiber. An article that has more than five or six per cent of fiber is not generally eaten with much relish by poultry. Fiber is the one element in feeds that we want as low as we can get it. The third column gives the ash or mineral matter in the article. This is higher in the by-products, as a rule, than in the grains and their straight milled products, but it really is not of much importance, because the mineral in feeds is generally insufficient and the deficiency can be supplied cheaper In shell and bone than in grain stuffs. The fourth column gives the protein — the flesh formers. The grains run about 10 to 12 per cent protein, but the seeds run much higher, and the solid animal products generally higher still. In considering the feeding values of articles much higher in protein than the common grains, the principal point is their availability and the cost of using them to make up the possible deficiencies of protein in the grains and by-products which constitute the bulk of the ration. Sometimes one is more economical, sometimes another. The fifth column gives the carbo- hydrates, consisting of starches and sugars and like elements. In the com- mon grains, when dry, these are about 60 to 70 per cent, and knowing that somewhere near this amount is re- quired for average normal circumstan- ces, we can see at a glance whether an article approximates normal re- quirements, and by looking at the next 24 HOW TO FEED POULTRY FOR ANY PURPOSE WITH PROFIT column can tell whether an article 'be- low normal in these elements makes t up in the more concentrated car- bonaceous elements. The sixth column shows the per cent ol fat. In the common grains this is from 2 to 5 per cent. Theoretically a large per cent of fat will compensate for a deficiency in starch, etc., but in practice it is found that the large use o* fats makes a feed either unpalata- ble to the birds or injurious to their digestive organs, hence the article with high per cent of fat is to be con- sidered chiefly in view of the possi- bility of making this supply deficiency of fat in more bulky materials. The seventh column gives the nutri- tive ratio; that is, the ratio of the flesh formers to the heat and energy producers. The percentage of the nutritive elements in a feed being known, the method of computing the nutritive ratio is as follows: The fat is reduced to terms of carbohydrates by multiplying by 2.25, this being done because fat has 2.25 times the heat and energy producing capacity of the car- bohydrates. This result added to the carbohydrates gives us the total of the heat-producing elements. The remain- der of the process is simply a matter of statement, and of reducing the state- ment to its lowest numerical terms. To illustrate with corn: Multiplying the 5 per cent of fat by 2.25 we find that it is equivalent to 11.3 per cent of carbohydrates. Adding this to 70.3 (the value of the carbohydrates), we have 81.6 as the total percentage of heat producers. The percentage of protein is 10.4. Expressing the two quantities in the form of a ratio we have 10.4:81.6, and reducing this to its simplest terms we have 1:7.9 as the nutritive ratio of corn. The ratio is independent of the quantities of the feed, it is simply an expression of the relative proportions of the elements in the feed. The last column gives the fuel value, a term synonymous with potential energy and preferred for use in tables because it is shorter. This value is an actual and not a relative one, and must be taken for specific quantities of arti- cles. In tables of poultry feeds it is usual to give the number of heat units in one ounce. One advantage of this is that the common grains happen to have an energy of about 100 calories per ounce, and taking this as the aver- age normal requirement we have 100 as a convenient standard for ordinary mental comparisons and calculations such as we make generally in practical feeding. The fuel value of an article is as- certained originally by burning it and measuring the resultant heat. The fuel values of its different elements are ascertained by burning them sep- arately after they have been chemical- ly separated. In this experimental way it was found that an ounce of pro- tein and an ounce of carbohydrates have the same fuel value — 116 calories, •while an ounce of fat has a fuel value of 264 calories. (It will be noted that this is a little more than indicated by the factor 2.25 which we use in reduc- ing fat to terms of carbohydrates in determining nutritive ratios. The 264 is accurate; the other disregards a small fraction). The calculation of fuel value in an ounce of a feed therefore is simply a matter of finding the value of the combined protein and carbo- hydrates, by multiplying the percent- age of the two by 116, then finding the value of the fat by multiplying the percentage of fat by 264; and adding these results. Taking corn as an example: An ounce of corn is 10.4 per cent protein and 70.3 per cent carbohydrates; that is, 80.7 per cent of 'it has a fuel value of 116 calories per ounce. If an ounce has a fuel value of 116 calories, 80.7 per cent of an ounce has a value of (116 x .807) calories, or disregarding the third decimal (116 x .80) calories, which gives us 92.8 calories as the heat value of these elements. Corn being 5 per cent fat, and fat having a fuel heat value of 264 calories per ounce, the heat value of the fat in an ounce of corn is found by multiply- ing 264 x .05, which gives us 13.2 calories in the fat in an ounce of corn. Combining our two results we have 92.8 plus 13.2 equals 106. Analyses and Nutritive Values of Articles That Are or May Be Fed to Poultry (Continued) jaJC cfi w Rye and rye products 1-1 ftt- a, --4, *° «« w 2" ess- .Q s- .C i. ;- t-^QJ .— 4) X