922 Report oF THE First AssISTANT OF THE 
The ration for the second period had almost the same nutritive 
ratio as that of the first. There was a considerably greater 
amount of total digestible nutrients in the second ration, although 
the total organic matter was about the same. The fuel value of 
the second ration was higher and the cost was less. There wasa 
greater amount of protein and less fat. There was about a nor- 
mal decrease in milk yield. The cost of milk and of fat was 
about the same for both periods. The nutritive ratio was made 
somewhat narrower when rye forage was discontinued and more 
alfalfa fed; the total organic matter and the digestible nutrients 
were somewhat increased, also the fuel value and the cost of the 
ration. There was considerable increase in the amount of pro- 
tein. There was a slight decrease in the milk yield, probably 
less than the normal. The milk and its fat cost somewhat more. 
In changing from alfalfa to oat-and-pea forage more forage and 
grain were fed; the amount of digestible protein remained about 
the same, but there was a little falling off in the total nutrients. 
The cost of the ration was somewhat greater, also the cost of the 
milk and fat — although there was no falling off in milk yield. 
For the first period the greatest daily average milk yield was 
35.3 pounds and the smallest 15 pounds. The highest average 
per cent. of fat was 6.47 and the lowest 3.05. For the second 
period the extremes in average daily milk yield were 34.9 
pounds and 13.2 pounds and in percentage of fat 6.30 and 
3.00. For the third period the extremes were 35.3 pounds. 
and 12.7 pounds of milk, and 6.25 and 3.00 per cent. of fat. For 
the fourth period the extremes were 35.5 pounds and 13.1 pounds, 
and 6.15 per cent. and 2.77 per cent. of fat. In the following 
table will be found the composition of each food used. 
