104 



lias something to do with this increase, as it is generally known 

 that as the period of lactation progresses the quality of milk 

 slightly improves. The total number of times the milk was 

 under the standard in the morning with lot II. was 20, while 

 in the previous experiment it was 36 times under the standard 

 in the morning. In the case of lot I. during the present ex- 

 periment the morning's milk was under the standard 18 times, 

 while in the previous experiment it was under the standard 

 53 times. From these figures it might be suggested that the 

 effect of the brewers 7 grains did affect the quality of the milk 

 and as the flow of milk is always greater in the morning, per- 

 haps it does. On the average daily output, however, it may be 

 safely said that the brewers' grains do not appreciably affect 

 the quality so far as the fat is concerned. 



TABLE XLIV. PERCENTAGES OF SOLIDS NOT FAT IN MILK 

 FOR 8 WEEKS AND 10 WEEKS. 



LOT I. LOT II. 



Average percentage of solids not fat in total daily yield ... 9 "21 9'09 



Total solids not fat per day ............... 12'59 Ib. 1273 Ib. 



The " solids not fat " were in no case below the standard. 



Live-weight of the cows. The average live-weight of the 

 cows is shown in the following table : 



TABLE XLV. AVERAGE LIVE-WEIGHT (IN LB.) PER COW 

 OF EACH LOT. 



End of 



Average gain or loss 



Experiment (K). March 16. April 12. April 27. during experiment. 



1,047-2 ... 1,036 ... 1,044-4 ... 1,033-2 ... 



Lot I. 



Lot II. ... 1,044-4 ... 1,023-4 ... 1,057 



1,024-8 



-14 

 -19'6 



