196 REPoRT OF 1HE First ASSISTANT OF THE 
barley-and-pea forage and hay in the third ration there was an 
increase in the total organic matter of the ration, the amount of 
digestible nutrients, the digestible protein, and of the fuel value, 
although at a slight increase of cost. The nutritive ratio was 
made narrower — that of 1:5.3. There was considerable decrease 
in the milk yield, however, although not so much as followed the 
first change. The cost of milk, of the milk-solids and fat, was 
somewhat greater for the third period. | 
The greatest daily average yield of milk for the first period was 
30.3 pounds and the smallest 11.7 pounds. The highest average 
per cent. of fat was 4.77 and the lowest 2.30. For the 
second period the extreme daily average milk yields were 26.7 
pounds and 9.4 pounds; the extremes in average percentage of 
fat were 5.62 and 1.92. For the third period the extremes 
in daily average yield of milk were 24.7 pounds and 8.7 
pounds; and in average percentage of fat 5.28 and 2.83. 
The following table shows the composition of each food used 
during this trial : 
‘yi 
oY, 

