83 



TABLE XXX. AVERAGE QUANTITY OF MILK IN PINTS PER 

 LOT PER DAY FOR 8 WEEKS. 



experiment, whicli was to be -expected. It is , interesting, 

 however, to observe that at the end of the experiment, taking 

 the average yield per cow, those in lot I. had dropped 5| pints 

 per head per day, while the cows in lot II. had only dropped 

 2 j pints per -head per day compared with their respective 

 yields at the end of the preliminary trials. At the end of the 

 experiment, the average daily yield of lot I. was 4 pints less 

 than it was at the beginning. On the other hand, the daily 

 yield of lot II. was SJ pints higher at the end than at the 

 beginning of the experiment. There were some fluctuations 

 in both lots, but lot II. not only gave more milk than lot I., 

 but decreased in its milk yield much less rapidly with the 

 advance in the lactation period also than did lot I. In every 

 way, as regards the quantity of milk, lot II. was superior to 

 lot I., thus showing in a striking degree the effect of the 

 brewers' grains in increasing the yield. 



Quality of the milk. The average percentage of butter- 

 fat in the milk of each lot is shown in Table XXXI. 



The results here are very interesting, especially from the 

 milk-seller's point of view. Taking the percentage of fat in 

 the total daily yield of each lot, there was an advantage of 



