^VBRIM^^ ^^/^t^^ Class (4?.^.^...X^- Number JV.'S.'B.... Volume .^. ..J^r^:^ X Source .\Saa-m3uiaa,c:j. Received Cost. Accession No. \ 5" A^ S. Bulletin 113 October. 1904 NEW HAMPSHIRE COLLEGE Agricultural Experiment Station CORN-MEAL, MIDDLINGS, AND SEPARATOR SKIM-MILK FOR FATTENING PIGS By EDWARD L. SHAW NEW HAMPSHIRE COLLEGE OF AGRICULTURE AND THE MECHANIC ARTS DURHAM NEW HAMPSHIRE COLLEGE OF AGRICULTURE AND THE MECHANIC ARTS AGRICULTURAL EXPERIMENT STATION DURHAM, N. H. BOARD OP CONTROL Hon. JOHN G. TALLANT, Chairman. Pembroke. Hon. GEORGE A. VVASON, New Boston. CHARLES W. STONE, A. M., ^-^cr^A/rj. East Andover. Hon. warren BKOVVN. Hampton Falls. Pres. WILLIAM D. GIBBS, ex-officio, Durham. STATION COUNCIL WILLIAM D. GIBBS, M. S., Director. FRED W. MORSE, M. S., Chemist 'a\m\ Vice- Director, ^CLARENCE M. WEED, D. Sc, Entoirwlogist. FRANK WILLIAM RANE, B. Ac, M. S., Horticulturist. FREDERICK W. TAYLOR, B. S., Agriculturist. EDWARD L. SHAW, B. S., Associate Agriculturist, IVAN C. WELD, Dairy Mam/factures. HARRY F. HALL, Associate Horticulturist. ASSISTANTS J HARRY D. BATCH ELOR, B. S., Assistant Chemist. J JOHN C. BRI DWELL. B. S., Assistant Entomologist. \ MABEL H. MEHAFFEY, Stenographer. \ * Ressigned Sept. ist, 1904. CORN-MEAL, MIDDLINGS, AND SEPARATOR SKIM- MILK FOK FATTENING PIGS. BY EDWAKD L. SHAW. This experiment was started December 1, 1903. The object was (1) to compare the feeding value of separator skim-milk when fed with corn-meal and with middlings, and (2) to com- pare the feeding value of corn-meal and middlings. PLAN OF THE EXPERIMENT. Twenty Yorkshire pigs, from twelve to thirteen weeks old and of uniform size, were selected and divided into four lots, five pigs in each lot. The pigs were all numbered with the Dana label, weighed every ten days, and the weight of each pig carefully recorded. The pigs were fed on the experimental ration for a few days to become accustomed to the change before the initial weights were taken. In selecting the twenty pigs for the exj^eriment, ten sows and ten barrows were chosen, so as to compare the gains made by the sows with the gains made by the barrows. The sows and barrows were divided in the four lots as fol- lows: Lot I, two sows and three barrows. Lot II, two sows and three barrows. Lot III, three sows and two barrows. * Lot IV, three sows and two barrows. The experiment was divided into two sixty-day periods. During the first sixty-day period the four lots were fed as follows: 140 CORN-MEAIi, MIDDLINGS, AND SEPAEATOK SKIM-MILK Lot I, corn-meal and separator skim-milk; four pounds of skim-milk to one pound of corn-meal. Lot II was fed corn-meal and water; enough water was added to the corn-meal to make a good slop. Lot III was fed middlings and separator skim-milk; four pounds of skim-milk to one pound of middlings. Lot IV was fed middlings and water; enough water was added to the middlings to make a good slop. At the close of the first sixty-day period lot two had made a fair gain, but lots three and four had made rather small gains, and in order to get them in condition for market the rations ^vere changed as follows for the second sixty-day period: Lot I, fed the same as before. Lot II was fed corn-meal and skim-milk. Lot III was fed corn-meal, middlings, and skim-milk (half corn-meal, half middlings). Lot IV was fed corn-meal and skim-milk. The cost of the corn-meal, middlings, and skim-milk was as follows: Corn-meal . . . $1.10 per hundred pounds. Middlings . . . 1.20 " " " Skim-milk . . . 0.15 " FOR FATTENING PIGS 141 O t— I Ah Q I »— I ^ ; -UIBS jo m O \R Tt ec punod aed isoo T^ «0«> 05 1 **niBS 1 05 CO Iffl 1 JO punod iad a M wso t^ paransnoD poo^ o a, lO rHco oeo -^ in t- 00 ^ cq o '!»< OS 00 J5 SC U3 «o 00 . 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O 60 a >* 4-> Xi e4 a a t« •F^ 9 a a 1— 1 (4 * (O rs 142 COEN-MEAL, MIDDLINGS, AND SEPAEATOK SKIM-MILK In looking over the table for the first sixty-day period, it Avill be seen that Lot T, receiving corn-meal and skim-milk, made an average gain of 35.5 pounds more and at a cost of 2.18 cents per pound of gain less than Lot II, which received corn-meal and water. Lot III, receiving middlings and skim-milk, made an average gain of 14 pounds more and at a cost of 2.02 cents less per pound of gain than Lot IV, receiving middlings and water. Lot II, receiving corn-meal and water, made an average gain of 14.4 pounds more and at a cost of 2.93 cents less per pound of gain than Lot IV, which received middlings and water. During the second sixty-day period, the three lots receiving-^ corn-meal and skim-milk made very good gains and at a mod- erate cost per pound of gain. It will be seen from the tables that it cost 1.1 cents more in Lot I during the second sixty-day period to produce a pound of gain, this lot having received the same ration during both periods. Lot III, receiving half corn-meal and half middlings with the- skim-milk, did not make a pound of gain as cheaply as when fed middlings and skim-milk. FOR FATTENING PIGS 143 TABLE SHOWING THE GAINS MADE BY THE SOWS AND BARROWS. FIRST SIXTY-DAY PERIOD. Average gain of sows. Average gain of barrows. Lot I 83.2 26.5 33. 16. 71.8 Xot II 33.6 Lot III 26.3 LotIV 17.3 Total 158.7 149.0 Averaee 39.6 37.2 Average gain of sows. Average gain of barrows. Lot I Lot II 94. 67 5 38. 45. 72 6 104.8 Lot III 51.5 Lot IV 105 7 Total 244.5 344.6 Average 61.1 83.6 From the above tables it will be seen that during the first sixty-day periods there was an average gain of 2.4 pounds in favor of the sows; and during the second sixty-day period there was an average gain of 22.5 pounds in favor of the barrows; but for the two sixty-day periods there was an average gain of 10.1 pounds in favor of the barrows. ■f CONCLUSIONS FEOM THE EXPERIMENT. 1. The pigs receiving corn-meal and separator skim-milk were the most hearty feeders and made the best gains. 2. The cost per pound of gain was over two cents cheaper where skim-milk was fed with corn-meal and middlings. 3. Corn-meal produced much better gains and at a cost of 2.93 cents cheaper than middlings. 4. During the entire exj)eriment the barrows made the best gains. 5. The cost per pound of gain increased with the age of the pigs. 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