1011.1 



rUBLlC DOCUMEiNT — No. 31. 



93 



Protein Balance (Pounds). 



Periods of Twenty-one Days. 



Infiuence of Protein on Milk Yield. 



Herd Results in Pounds. 



It will be seen that on the higli-protein ration the cow.s re- 

 ceived 92.8 per cent, more digestible crude protein than was 

 required for niainteiiunce and for the milk produced, while in 

 low-protein ration the excess was only 5 j^er cent., the amount 

 digested and the amount fed being substantially equal. 



The figures show that for a period of twenty-one days, while 

 not changing in M^eight, the herd produced 13.3 per cent, more 

 milk on the high-protein diet, showing very distinctly the in- 

 fluence of the excess of protein. This experiment exactly con- 

 firms the ex})eriment immediately preceding. 



