12 
BULLETIN 21, U. S. DEPARTMENT OF AGRICULTURE. 
The lots which averaged to weigh less than If pounds per bird were 
classed as broilers during the first part of the feeding season and the 
broilers and roasters were separated and fed different feeding periods 
after the 1st of October. 
Table 7. — Summary of Experiment C. 1912, Station 4. arranged according to length oj 
feeding period. 
Per cent of gain. 
Grain per pound of gain. 
Number 
of head. 
Days 
fed. 
Average 
weight. 
High. 
Low. 
Average. 
High. 
Low. 
Average. 
Pounds. 
Per cent. 
Per cent. 
Per cent. 
Pounds. 
Pounds. 
Pounds. 
11,360 
7 
2.47 
18.0 
14.0 
16.2 
3.69 
2.64 
3.00 
25, 600 
8 
2.46 
22.0 
12.0 
18.5 
4.28 
2.75 
3. 10 
17,360 
9 
2.57 
29.0 
9.0 
18.5 
5.88 
2.78 
3.51 
27,440 
10 
2.22 
30.0 
10.0 
20.1 
5.83 
2.39 
3. 42 
30, 880 
11 
2.28 
34.0 
12.0 
20.4 
5.19 
2.72 
. 3.75 
41,320 
12 
2.13 
40.0 
6.0 
20.2 
] 
2.60 
2.58 
4.50 
24,640 
13 
1.93 
37.0 
7.0 
22.9 
7.83 
2.75 
4.24 
6,800 
14 
1.65 
39.0 
25.0 
28.8 
4.95 
2.80 
3.64 
2,720 
15 
1.70 
37.0 
27.0 
32.7 
5.41 
3.03 
3.83 
2,800 
211,560 
43,120 br 
26, 880 ro 
16 
1.66. 
38.0 
23.0 
33.0 
4.78 
3.18 
3.96 
2.21 
1.64 
3.10 
20.7 
26.8 
11.7 
3.72 
4.02 
5. 73 
filers 
isters 
Total < 
iost of feed per 
Cost of labor per 
Total cost per pound 
Number 
oPhead. 
po 
ind of gain. 
pound of gain. 
of gain 
High. 
Low. 
Average. 
High. 
Low. 
Average. 
High. 
Low. 
Average. 
Cents. 
Cents. 
Cents. 
Cents. 
Cents. 
Cents. 
Cents: 
Cents. 
Cents. 
11,360 
6.39 
4.67 
5.33 
1.05 
0.82 
0.89 
7.44 
. 5.49 
6.22 
25, 600 
7.64 
4.84 
5.49 
1.21 
.77 
.88 
8.85 
5.61 
6.37 
17,360 
10.47 
4.88 
6.22 
1.85 
.75 
.99 
12.32 
5.63 
7.21 
27,440 
9.73 
4. 18 
6.13 
2.10 
.80 
1.33 
11.80 
5.02 
7.46 
30, 880 
9.14 
4.80 
6.63 
1.74 
.88 
1.31 
10.73 
5.68 
7.94 
41,320 
23.89 
4.62 
7.93 
6.37 
1.01 
1.75 
30. 26 
5.63 
9.68 
24,640 
13. 80 
4. 93 
7.54 
2.52 
1.04 
1.6S 
16.32 
6.01 
9.22 
6,800 
8.09 
5.03 
6.51 
2.91 
1.09 
1.55 
10.30 
6.12 
8.06 
2,720 
9.64 
5.52 
6.92 
2.36 
1.70 
2.14 
11.34 
7.88 
9.06 
2,800 
8.52 
5.82 
7.20 
2.87 
1.47 
2.12 
11.34 
7.78 
9.32 
211,560 
43,120 br 
26,880 rot 
6.61 
7.25 
1.37 
1.74 
7.98 
8.99 
9.78 
1.89 
11.67 
EXPERIMENT D, 1911. 
The results of this experiment at Station 2 were quite even through- 
out the season, except that during the month of November there was a 
marked increase and great variation in the cost of gains. The lots 
were handled like those in Experiment C,' except that roasters were 
fed 7 or 8 days, while broilers were on feed 14 days. This method is 
open to criticism because cheaper gains are* produced by gradually 
decreasing the length of the feeding period on roasters, reaching 7 or 
8 days about the middle of October, than by changing from 14 
directly to 7 or 8 days as soon as the lots are separated into roasters 
and broilers. However, much depends on the weather conditions, 
on the market, and on the economy of labor in the feeding station. 
