EFFECT OF SILAGE OX FLAVOR AND ODOR OF MILK. 9 
nized in over 85 per cent of the cases. Although sufficient flavor and 
odor were present in the milk to be detected in this number of cases 
by men examining the milk carefully, it is probable that the feeding 
of 10 pounds of silage, as above, did not affect the milk sufficiently 
to be noted by the average consumer. 
EFFECT OF AEBATION. 
To determine the effect of aeration on the feed flavor and odor 
present, the same milk, after being sampled and while still warm, 
was passed over a surface cooler and resampled. The results in 
Table 3 show that when the milk was aerated a part of the feed 
flavor and odor it contained was removed- The table shows that, in 
the aerated milk, feed flavors and odors were noted in six samples 
fewer than in the milk before aeration. They were reduced in de- 
gree also in the other samples. 
The cows not receiving silage occupied and were milked in alter- 
nate stalls from those receiving silage. In the table it is seen that 
in over 96 per cent of the cases no feed flavor or odor was observed 
in the milk drawn from cows standing in the same barn side by side 
with the cows fed silage. 
This experiment shows that the feeding of 10 pounds of corn silage 
one hour before milking gave a perceptible feed flavor and odor to 
the milk. It further shows that if such milk is carefully aerated 
while still warm, the degree of flavor and odor may be materially 
diminished. In the opinion of the judges, the silage flavor present in 
the milk often enhanced rather than detracted from its palatability. 
4. FEEDING 20 POUNDS OF CORN SILAGE BEFORE MILKING 
In the next experiment, the quantity of corn silage fed before milk- 
ing was increased to 20 pounds. 
Table 4. — Effect of feeding 20 pounds of corn silage once a day one hour before 
hi Hieing. 
Result of sampling. 
Milk from cows fed 
silage. 
Milk from 
cows not 
fed silage. 
Before 
aeration. 
After 
aeration. 
25 
25 
25 
Off flavor . 
18 
7 
18 
7 

No off flavor 
25 
Off odor 
25 

20 | 
5 25 
The results in Table 4 show that the feeding of 20 pounds of corn 
silage each to cows one hour before milking gave the milk sufficient 
feed flavor or odor to be detected in all of the samples. The flavors 
10S550 — 22 2 
