1911. 



PUBLIC DOCUMENT — No. 'SI. 



103 



Protein Balance (Pounds). 



Herd Results; Periods of Twenty-six Days. 



Influence of Protein on Milk Yield. 



Herd Results in Pounds. 



Tlic average amount of digestible protein fed daily to each 

 cow in the high-protein ration Avas 2.41 pounds, and the excess 

 over that required for milk and maintenance was 05. 3 per cent. 

 In the low-protein ration each cow received 1.96 pounds daily, 

 and an average excess of 39 per cent, above requirements. 



During the high-protein feeding the herd produced 7.4 per 

 cent, more milk than when it received the low-protein ration, 

 showing the influence of the larger amount. Whether all of 

 the milk increase was due to the extra protein consumed is 

 uncertain. The low-protein ration naturally had a wider ratio, 

 and evidently was rather better suited to fattening than to milk 

 production, and Avas indicated by the increase in live weight. 



Composition of the Herd Mill- {Per Cent.). 



