14 BULLETIN 1101, U. S. DEPARTMENT OF AGRICULTURE. 
Table 11.— Distribution by months of milk prices, etc.— Continued. 
Income 
per 100 
pounds 
of milk. 
Income 
from 
milk 
sold 
and 
used. 
Milk 
sold 
and 
used. 
Feed, 
pasture, 
and 
bedding 
cost. 
Pasture 
and 
bedding 
cost 
minus 
manure 
and 
bedding 
credits. 
Human labor. 
Horse labor. 
Month and season. 
Per 100 
pounds 
of milk. 
Per cow. 
Per 100 
pounds 
of milk. 
Per cow. 
1920-21. 
May 
S2.48 
3 11 
Per cent. 
8.2 
9.2 
9.5 
9.4 
9.3 
9.6 
Per cent. 
10.2 
9.2 
10.2 
8.6 
8.1 
7.8 
Per cent. 
5.2 
5.1 
4.2 
4.7 
5.5 
5.8 
Per cent. 
5.0 
4.9 
4.0 
4.5 
5.3 
5.7 
Hours. 
2.2 
2.4 
2.1 
2.6 
2.4 
2.5 
Hours. 
12.3 
11.2 
10.9 
11.5 
9.6 
10.2 
Hours. 
.3 
.4 
.3 
.3 
.4 
.3 
Hours. 
June 
1.7 
July 
August 
September 
October 
2.87 
3.38 
3.52 
3.85 
2.0 
1.6 
1.4 
1.6 
1.3 
Summer 
3.15 
3.86 
3.02 
2.86 
2.90 
2.87 
2.74 
55.2 
54.1 
30.5 
29.4 
2.4 
10.9 
.3 
1.6 
November 
9.1 
6.6 
6.6 
6.2 
7.6 
8.7 
7.3 
6.8 
7.0 
6.7 
8.2 
9.9 
9.0 
12.1 
12.7 
11.8 
13.3 
10.6 
7.9 
11.0 
11.6 
10.7 
12.1 
9.4 
2.4 
2.8 
2.9 
3.0 
2.8 
2.2 
9.3 
11.2 
11.7 
11.1 
.3 
.5 
.7 
.7 
— ; — . 
December 
1.2 
January 
2.0 
February 
2.8 
March 
2.6 
April 
12.6 
12.0 J .3 
2.1 
1.8 
Winter 
3.03 
44.8 
45.9 
69.5 
62.7 
2.7 
11-3 .5 
2.1 
Year 
3.10 
100.0 | 100.0 
100.0 
92.1 
2.5 
11.1 '■ .4 
1.8 
The second column shows that 46.5 per cent of the yearly income 
for the first year was obtained during the summer six months. The 
third column shows that this income in summer was received in re- 
turn for the sale of 47.1 per cent of the yearly volume of milk pro- 
duced. 
The fourth column indicates that this volume of milk was ob- 
tained for 30.8 per cent of the yearly gross feed cost. 
In winter it took 69.2 per cent of the gross yearly feed cost to pro- 
duce 52.9 per cent of the yearly volume of milk which brought in 
53.5 per cent of the yearly income received from it. The conclusion 
drawn from these figures and from those for the second year is that 
income and volume of milk sold closely followed each other, but in- 
come and gross feed cost required to produce milk did not follow 
each other. 
SUMMARY. 
In this investigation the requirements for producing milk were 
obtained from records covering two 1-year periods. During the 
winter months the requirements for producing 100 pounds of milk 
having an average butterf at test of 3.6 per cent were : Concentrates, 
53.7 pounds; hauling and grinding concentrates, $0.01; dry rough- 
age, 114.2 pounds; silage and other succulent roughage 91 pounds; 
bedding, 17.9 pounds; pasture, $0.06; human labor, 2.6 hours; horse 
labor, 0.5 hour; total other costs except depreciation on cows, $0.79; 
depreciation on cows, $0.24. 
