84 FARM ANIMALS 
and wheat, replacing with other foods having a narrow 
nutritive ratio, such as the oil meals, and the factory by- 
products. Very often this exchange is made; and not 
only is the ration improved, thus bringing about better 
results from the animals under feed, but a money profit 
is secured in addition to that obtained because of the 
greater efficiency of the ration. 
More milk can be produced from a given herd of cattle 
if the grain is fed in proportion to the milk given than 
if distributed equally among all the cows of the herd. 
Let it be assumed that in addition to what clover hay and 
1 Acre 44 Acres 
Cowpea Timothy Hay 
Hay 
INCREASING THE FARM PROTEIN SUPPLY 
The two fields will produce the same amount of protein. This is one reason why 
legume farming pays. 
silage a cow will eat, she should receive 1 pound of 
grain for each 5 pounds of milk. Under these conditions, 
a cow that is producing 20 pounds of milk would require 
4 pounds of grain; one giving 30 pounds, 6 pounds; while 
a cow producing 50 pounds of milk would require 10 
pounds of grain. The best results are obtained by the 
skillful feeder who studies the needs of his cows. 
