The composition of the milk during the two periods may be con- 

 sidered practically identical. 



FOOD COST OF MILK AND BUTTER. 



The difference, though not large, is in favor of the distillers' 

 grains. 



DRV MATTER AND DIGESTIBLE MATTER REQUIRED TO PRODUCE MILK 



AND BUTTER. 

 {Pounds). 



Digestible organic matter 

 required to produce: 



0:2 



58.91 

 64.22 



T3 T3 

 C — 

 3 O 



4-23 

 4-56 



12-35 



I3-2I 



It is evident that it required from 4 to 6 per cent, more dry 

 matter and from 7 to 9 more digestible matter to make milk, milk 

 solids and milk fat with the Buffalo gluten than with the distillers' 

 grain ration. 



