EXPERIMENT STATION BULLETINS. 



153 



Averages for four weeks. 



TABLE 2.— LOT 2. 



KO ROOTS. 



Averages for two weeks. 



nooTS. 



A study of Table 1 shows a considerable decrease in production, when 

 the roots were dropped out of the rations, which could hardly be entirely 

 due to the advance in the period of lactation. The average weekly pro- 

 duction of milk was 10.94 lbs. greater, and of butter fat .457 lb. greater 

 on the root ration. The average weekly cost of the ration, however, was 

 increased by 9.8 cents. The cost of production per cwt. of milk was 2.6 

 cents greater, and per pound of butter fat .5 cent greater on the root 

 ration. 



Table 2 shows a slight increase both in milk and butter fat produc- 

 tion, amounting to .75 lb. milk and .116 lb. butter fat, while without 

 the addition of the roots we would expect a decrease because of the 

 advance in the lactation period. The cost of the ration increased with 

 roots 12.6 cents per week, milk cost 7.4 cents more per cwt. and butter 

 fat 1.66 cents more per lb. 



20 . 



