20 BULLETIJiT 1097, TJ, S. DEPAETMEXT OF AGRICULTURE. 



1. FEEDING SOY-BEAN SILAGE BEFORE MILKING. 



In feeding this material it was noted that 5 pounds gave the milk 

 a detectable feed flavor and odor. As the quantity was increased to 

 15 and 20 pounds, the flavors and odors present increased in intensity. 



Table 11. — Effect of feeding 5 to 20 pounds of soy-bean silage once rlaily one 



hour before millcing. 



Result of sampling. 



Milk from 



cows fed 



sUajre. 



Milk from 

 cows not 

 fed silage. 





16 



16 







Off flavor 



16 

 



1 





15 







Off odor 



16 

 



2 



No off odor. ... 



14 







The milk from cows not receiving soy-bean silage was scored, as 

 usual, for a check, with the results shown in the table. 



2. FEEDING SOY-BEAN SILAGE AFTER MILKING. 



In feeding 5 to 20 pounds of soy-bean silage one hour after milk- 

 ing, it was noted that when the quantity fed reached 10 pounds, a 

 slight flavor resulted. This was increased in degree as the quantity 

 of silage given the cows was increased. 



Aeration greatly reduced the objectionable flavor, although the 

 extent of the reduction is not shown in the table. When the quantity 

 fed after milking was again reduced to 10 pounds, a slight feed odor 

 was noted by the judges after aeration. 



T.\BLE 12. — Effect of feeding 5 to 20 pounds of soy-bean silage once daily one 



hour after milking. 



Result of sampling. 



Milk from 



cows fed 



sUage. 



Milk from 

 cows not 

 fed silaiie. 





16 



16 









Off flavor 



12 



4 







No off flavor . . . . . , 



16 









Off odor. . 



12 

 4 









16 







Again it is shown that the cows not receiving soy-bean silage, 

 standing in alternate stalls, produced milk not affected by the barn 

 air. 



From the experiments with soy-bean silage it is apparent that 

 when this feed is fed one hour before milking, even in such small 

 amounts as 5 pounds per cow, it affects the flavor and odor of the 

 milk. Increasing the quantity fed increased the feed flavor. It is 



