152 



EXPERBIEXT STATION. 



[Jan. 



The amoimt of total dry and digestible matter consumed was 

 secured from our dry-matter determinations and analyses and 

 the use of average digestion coefficients. They tell substantially 

 the same story as did the yields of milk and milk ingredients. 

 In the first experiment it required rather more dry matter to 

 produce a definite amount of milk and milk ingredients with the 

 oat ration. In all of the experiments a definite amount of milk 

 and milk ingredients was produced by a little less digestible 

 matter derived from the oat ration. The average of the three 

 trials shows milk and milk ingredients were produced by the use 

 of rather less dry and digestible matter for the oat ration. The 

 reason for this has alreadv been indicated. 



Food Cost of Milk and Butter-fat. 



Experiment I. 



In the first experiment the milk cost noticeably less on the 

 corn ration ; in the second experiment the results were about 

 equal ; and in the third experiment the corn ration had a slight 

 advantage. The average of the three experiments is slightly in 

 favor of the corn ration. The reason for sharper difference 



