New YorK AGRICULTURAL EXPERIMENT STATION. 119 
ent modifications of the ration as related to the protein content 
are briefly summarized on p. 64 at the beginning of this 
bulletin. 
THE NUTRITIVE RATIO. 
The effects of changes in the nutritive ratio, as a rule, of 
course were directly in line with those evidenced by the group- 
ings of the rations on the basis of protein content as related to 
differing amounts of total organic nutrients. The unusual 
amount of fat in a few foods caused considerable difference in 
some of these relations of ratio to the actual amount of protein 
in the ration. 
It is unnecessary to give all the data from the averages made 
to show the general effect of changes in nutritive ratio. In con- 
sidering the records on this basis they were grouped with rela- 
tion to the ratio of 1:6, although the majority of the rations had 
a wider ratio, principally because the standards in general call 
for a ration with this nutritive ratio or one narrower. 
Moderate changes in the nutritive ratio within the ordinary 
limits had considerable less effect on the milk flow than did 
changes in the amount of total digestible organic matter. The 
general results accompanying different modifications of the 
ration which affected the nutritive ratio are stated on p. 65 of 
the general summary. 
