106 



HATCH EXPEEIMENT STATION. 



[Jan. 



gluten and linseed meals were substituted for corn meal. It 

 might have been better had the coarse feeds been increased 

 somewhat, in order to have raised the total digestible nutri- 

 ents to 15 pounds daily. The animals, however, maintained 

 very even average weights during both experiments. In 

 both halves of each experiment the total digestible nutrients 

 were practically the same. 



Table I. — Yield and Cost of Milk. 

 Exjieriment I. 26 Days {6 Cows). 



Experinieiit II. 21 Days (6 Cows). 



The above table shows that the narrow rations produced 

 from 11.8 to 12.9 per cent, more milk than did the wide 

 rations, and that they reduced the cost of production from 5 

 to 12 per cent. At the end of Experiment II., six months 

 after calving, the cows were averaging between 11 and 12 

 quarts of milk daily.* It was not the primary object of 

 these two experimonts to select the most economical feeds 

 for milk production, but rather to note the eifect of narrow 

 V. wide rations on the quality of the milk. The figures, how- 

 ever, cannot fail to prove interesting to the milk producer. 



* Cow No. 2, at the close of Experiment II., had Iteen calved but three months. 



