6 
BULLETIN 561, U. S. DEPAKTMEXT OF AGRICULTURE. 
9.5 pounds each of grain and of mash daily, and 100 Leghorns should 
receive about 7.5 pounds of each. (See Table 3 for amount in 
quarts.) The amount of feed consumed varies considerably through- 
out the year, being greatest just preceding the period of highest egg 
production, but it does not vary absolutely with production either 
during one year or when one year is compared with another. (See 
fig. 1.) This latter fact is readily seen by comparing the average 
egg yield and total feed consumption in Pens 1 to 6 for their first and 
second years (see Table 2). The egg yield decreased about 30 per 
cent in their second year, while the feed consumption decreased only 
3 per cent. 
A fair grade of beef scrap with a guaranteed protein analysis of 50 
to 55 per cent, fat 12 to 13 per cent, and 1 to 3 per cent of fiber was 
used. The cracked corn was white, but the corn meal was ground 
from yellow corn. The prices of some of the grains were changed in 
April, 1913, to conform to the market price at that time. That price 
has since been used without change in figuring all the costs in this 
bulletin. Prices of individual grains in 1917 are from 20 to 100 per 
cent higher than the prices used in this bulletin. Present prices of 
grains should be compared to these prices in arriving at the present 
cost of producing eggs. 
Table 3. — Price and v:eight of grains. 
Price per 100 pounds. 
Price per bushel. 
Grain. 
Up to 
April, 
1913. 
After 
April, 
1913. 
Up to 
April, 
1913. 
After 
April, 
1913. 
Weight of 
1 quart. 
§1.30 
1.90 
1.G0 
1.74 
1.35 
1.40 
1.45 
SI. 20 
1.79 
1.34 
1.74 
1.45 
1.40 
1.37 
2.30 
2.65 
1.85 
.GO 
.60 
SO. 73 
1.14 
.51 
.84 
.65 
$0.67 
1.07 
.43 
.84 
.70 
Lbs. 
1 
1 
1 
1 
1 
Oz. 
12 
Wheat 
14 
Oats ... 
8 
8 
10 
13 
2.50 
1 
5 
.00 
.GO 
HENS BALANCING THEIR OWN RATIONS. 
The fowls in Pens 3, 4, and 7 had bran, middlings, corn meal, and 
beef scrap in separate hoppers before them all the time (see Table 1). 
Tables 4, 4a, 4b, and 4c show the proportion of these mash feeds 
eaten by these pens for each 4-week period. 
