RATIONS FOR POULTRY IN THE PACKING HOUSE. 19 
Table 17. — Character of gains made by different classes of birds fed the control ration. 
Class. 
Number. 
Water. 
Protein. 
Lean 
meat 
(water 
and 
protein). 
Fat. 
Ratio of 
protein 
to fat. 
Ratio of 
lean 
meat 
to fat. 
Broilers 
114 
20 
26 
80 
Ounces. 
4.9 
5.3 
4.9 
2.3 
Ounces. 
1.2 
1.6 
.7 
.4 
Ounces. 
6.1 
6.9 
5.6 
2.7 
Ounces. 
3.6 
4.8 
4.4 
4.4 
1 : 3.0 
1: 3.0 
1: 6.3 
1 : 11.0 
1 : 0.58 
Springs 
1 : .69 
1 : .79 
Hens 
1 : 1.63 
The high, proportion of fat added by hens explains the feeding 
results which indicate that protein concentrates are not essential in 
rations for hens (p. 18). 
Table 18. — Gains made in 4, 8, 11, and 14 days by different classes of birds fed the control 
ration. 
Number. 
Gain in 
4 days. 
Gain in 
8 days. 
Gain in 
11 days. 
Gain in 
14 days. 
Class. 
Percent- 
age of 
initial 
weight. 
Percent- 
age of 
total 
gain. 
Percent- 
age of 
initial 
weight. 
Percent- 
age of 
total 
gain. 
Percent- 
age of 
initial 
weight. 
Percent- 
age of 
total 
gain. 
Per cent- 
age of 
initial 
weight. 
Broilers 
Springs ; 
612 
396 
336 
456 
12.09 
30.10 
22.91 
17.28 
17.29 
7.75 
57.05 
59.81 
77.36 
65.18 
31.34 
24.43 
20.68 
9.99 
78.04 
84.56 
92.53 
84.02 
40.16 
28.88 
Roasters 
11.11 
4.08 
49.71 
34.31 
22.35 
Hens 
11.89 
The average daily gains made by broilers in the different periods 
are 3.02, 2.71, 2.81, and 2.94 per cent, respectively. In other words, 
these broilers continued to add weight very rapidly throughout the 
feeding period. In 11 days they had made only 78.04 per cent of 
their total gain. It thus appears that from the standpoint of the 
amount of gain made, a 14-day feeding period is not too long. 
Table 19. — Gains made by broilers during different feeding periods. 
Marginal 
gain. 
Gain in 4 days. 
Gain in 8 days. 
Gain in 11 days. 
Gain in 
14 days. 
Number of birds. 
Percent- 
age of 
initial 
weight. 
Percent- 
age of 
total 
gain. 
Percent- 
age of 
initial 
weight. 
Percent- 
age of 
total 
gain. 
Percent- 
age of 
initial 
weight. 
Percent- 
age of 
total 
gain. 
Percent- 
age of 
initial 
weight. 
96 
Per cent. 
50 
40 to 50 
30 to 40 
20 to 30 
17.45 
13.99 
9.98 
6.95 
31.18 
31.32 
28.82 
27.37 
32.95 
26.25 
18.92 
58.88 
58.76 
54. fi2 
43.81 
36.47 
26.20 
18.87 
78.29 
81.64 
76.81 
74.32 
55.96 
144 
44.67 
180 
34.63 
192 
13.52 53.25 
25.39 
612 
Average. 
12.09 
■ 30. 10 
22.91 
57.05 
31.34 
78.04 
40.16 
