1897.] 



PUBLIC DOCUMENT — No. 33. 



107 



Table II. — Yield and Cost of Butter. 

 Experivieni I. 26 Days (6 Cows). 



Experiment II. 21 Days (6 Cows). 



Narrow, 



Wide 



Increase narrow over wide ration, 

 Percentage increase, 



14.40 

 14.64 

 — .24 

 —1.67 



The figures tell the same story as they did in the yield of 

 milk. On the narrow rations the cows produced 13.7 per 

 cent, more butter in Experiment I. and 8.3 per cent, more 

 in Experiment II. than they did on the wide rations. In 

 Experiment I. the cost of feed per pound of butter produced 

 was 16.74 cents for the narrow ration and 18.41 cents for 

 the wide ration, showing that the narrow ration produced 

 butter for 10 per cent, less per pound than did the wide 

 ration. In Experiment II. the cost of feed per pound of 

 butter produced was 14.57 cents for the narrow and 14.64 

 cents for the wide ration, showing a diflerence of but 1.67 

 per cent, in favor of the narrow ration. 



It is of course impossible to state with accuracy the exact 

 cost of feed required to produce a pound of butter, as so 



* Cow V. (Red) during a portion of this period produced milk with but 2.85 per 

 cent, of fat, and then suddenly increased to 4 per cent. The above figures include 

 this cow's production on the basis of 4.05 per cent, fat for the entire period; other- 

 wise the percentage increase of the butter in the narrow ration would be more than 

 the percentage increase in the milk produced, which might lead to the supposition 

 that the narrow ration had actuall}' increased the percentage of fat in the milk, when 

 really this sudden increase of fat was entirely independent of the influence of the feed. 



