20 BULLETIN 1097, U. S. DEPARTMENT OE 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 daily one 
hour before in ill; in g. 
Result of sampling. 
Milk from 
cows fed 
silage. 
Milk from 
cows not 
fed silage. 
16 
16 
Off flavor . 
16 

1 
15 
Off odor . 
16 

2 
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. 
Table 12. — Effect of feeding 5 to 20 pounds of soy-bean silage ojicc daily one 
hour after in Hieing. 
Result of sampling. 
Milk from 
cows fed 
silage. 
Milk from 
cows not. 
fed silage. 
Number of examinations 
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 
