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^71 Station Bulletin 502 January 1974

BIO

K rC^ A ^-- V

GROWTH AND FEED STANDARDS
for BROILERS 1973

By

D. A. WHITTAKER,

J. E. HOLMES

and

W. C. SKOGLUND

Agricultural Experiment Station

University of New Hampshire

Durham, New Hampshire

iimversity of New Hampshire Library

GROWTH and FEED STANDARDS for BROILERS-1973

By D. A. Whittaker, J. E. Holmes and W. C. Skoglund*

The commercial broiler grower is interested in comparing his flock against a
recognized standard for growth, feed consumption and feed conversion at
different age levels.

The Depariment of Animal Sciences at the University of New Hampshire
previously has published standards in 195 3, 1959 and 1963. Ten years has
elapsed since the last standards were published and it seems worthwhile to bring
them up to date using the present day strains of broilers and the currently
available poultry feeds.

Data were obtained from three commercially available broiler crosses during
spring and fall of 1973. The birds were assigned randomly by strain to pens of
100 birds each at the rate of one bird per square foot. Six replicates for each
strain were used in each trial, or a total of 3600 birds in the two trials. Two
replicates of each sex and two replicates of combined sexes were reared. Body
weights for each strain were an average of all six replicates while the feed
consumption figures were obtained in the sex separated pens. The data for each
strain were averaged for each trial and final tables are an average of the two
trials. The chicks were brooded by a central hot water heating system using fin
type radiation. One hanging waterer and two hanging feeders were used in each
pen. A commercial broiler feed in crumble form was fed the first three weeks
and pellets were fed for the remainder of the trial.

Table I presents the average weekly weights and gains for the males, females
and mixed sexes.

Table II presents the weekly and cumulative feed consumption for each sex
and for mixed sexes.

Table III indicates the weekly and cumulative feed conversion for each sex
and mixed sexes.

Table IV shows the comparative broiler weight, feed consumption and
conversion for 1953, 1959, 1963 and 1973.

• Mr. Whittaker is UNH Poultry Farm Superintendent. Mr. Holmes is an Undergraduate
in Animal Science. Mr. Skoglund is Professor of Animal Sciences, New Hampshire
Agricultural Experiment Station.

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Table III —Weekly and Cumulative Feed Conversion* for Broilers — 1973

MALES

FEMALES

MIXED SEXES

Week

Weekly

Cumulative

Weekly

Cumulative

Weekly

Cumulative

1

.81

.81

.81

.81

.81

.81

2

1.50

1.21

1.52

1.20

1.53

1.21

3

1.63

1.39

1.68

1.40

1.64

1.40

4

1.85

1.55

2.02

1.60

1.93

1.58

5

2.08

1.76

2.23

1.77

2.16

1.77

6

2.25

1.88

2.33

1.91

2.26

1.89

7

2.34

1.98

2.58

2.04

2.47

2.01

8

2.51

2.07

2.87

2.17

2.67

2.12

* Pounds of feed required to produce one pound of live weight,

or

Kilos of feed required to produce one kilo of live weight.

Table IV - Comparative Figures 1953'', 19592, 1963^ and 1973, for Broiler Weights,
Feed Consumption and Conversion.

Average Body Weight
For Mixed Sexes

1953
Lbs,

1959
Lbs.

1963
Lbs

1973
Lbs

1953
Lbs.

Cumulative Feed
Consumption

1959
Lbs.

1963
Lbs,

1973
Lbs.

1953
Lbs.

Cumulative Feed
Conversion

1959
Lbs.

1963
Lbs.

1973
Lbs.

Initial

lU

.09

.09

.10

I

.19

.23

.27

.14

.16

.22

.74

.70

.81

2

.37

.37

.47

.61

.47

.44

.52

.74

1.26

1.19

1.11

1.21

3

.65

.82

1.06

.93

1.12

1.48

1.43

1.37

1.40

4

.91

1.04

1.23

1.60

1.65

1.61

1.94

2.52

1.81

1.55

1.58

1.58

5

1.51

1.72

2.20

2.53

2.95

3.90

1.68

1.72

1.77

6

1.51

1.99

2.29

2.92

3.38

3.59

4.2 3

5.53

2.24

1.80

1.85

1.89

7

2.50

2.92

3.65

4.84

5.67

7.33

1.94

1.94

2.01

8

2.35

3.01

3.52

4.40

5.71

6.28

7.31

9.33

2.43

2.09

2.08

2.12

9

3.57

4.13

7.84

9.09

2.20

2.20

10

3.26

4.05

8.70

9.39

2.67

2.32

11

3.60

10.15

2.82

12

3.99

11.76

2.95

13

4.47

13.89

3.11

Poner. L. M.. and R. C. Ringrose, 1953. Growth and Feed Standards for New Hampshire, Station Bulletin 401. New Hampshire Agricultural
Experiment Station.

^ Reed, Willis S.. and W. C. Skoglund, 1959. Growth and Feed Standards for Broilers- 1959. Station Bulletin 466, New Hampshire Agricultural
Experiment Station.

^Wabeck, C. J., and W. C. Skoglund, 1963. Growth and Feed Standards for BroileTs-I96J. Station Bulletin 478, New Hampshire Agricultural
Experiment Station.

lUG 1 3 2004

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