EFFECT OF SILAGE OX FLAVOR AND ODOR OF MILK. 11 
The flavors and odors in the milk of the silage-fed cows were 
noted as "fermented feed." -feed." or "slight silage," "silage," or 
'I strong feed" in all cases. The results in Table 5 show that milk 
from cows fed 30 pounds of corn silage before milking had a decided 
feed flavor and odor. The taste and smell of the feed were noted in 
every case by all the judges. In the opinion of these men. sufficient 
was present to be noted by even those consumers giving but little at- 
tention to the flavor and odor of the milk supplied them. 
EFFECT OF AERATION. 
Although a feed flavor and odor were noted by all the men who 
passed upon the aerated milk, the degree present was diminished. 
This shows that when silage is fed in these quantities just before 
milking, aeration may be of much assistance in decreasing the flavor 
and odor of silage. 
The milk from the other 2 cows in the barn in alternate stalls 
from those fed silage was examined as a check on the barn air and the 
basic ration which all the cows were receiving. 
Comparing the results in this experiment with those obtained in 
Experiment No. 2. the effect of the new factor, ventilation, on the 
flavor and odor of milk produced by cows not fed silage is strikingly 
shown. (Compare the columns for the check cows in Tables 2 and 
5). Proper ventilation may play an important part in ridding the 
barn of manure odors. Adequate ventilation is, therefore, important 
in limiting undesirable flavors and odors which may be absorbed 
during milking. 
This experiment also shows that feeding 30 pounds of corn silage 
one hour before milking gives the milk a feed flavor and odor suffi- 
cient to render it objectionable to most consumers. Another point 
brought out was that, whether silage is fed immediately after being 
taken from the silo or allowed to air somewhat before feeding, the 
milk produced carries strong feed flavor and odor. This feed flavor 
and odor had a tendency, however, to be stronger in the milk when the 
silage was fed fresh from the silo. Even when as low as 10 pounds 
of silage per cow were fed a silage flavor was imparted to 85 per cent 
of the samples in a sufficient degree to be noted by those looking care- 
fully for it. The degree of flavor, however, was much less than 
when 20 or 30 pounds were fed in a like manner. It may be said 
that not until 20 pounds or more were fed did the feed flavor and 
odor become so pronounced as to make the milk decidedly objection- 
able to a majority of consumers. In fact, it was the opinion of the 
judges that the flavor imparted when 10 pounds of corn silage were 
fed enhanced the palatability of the milk. 
It was apparent that the greater the quantity of silage fed before 
milking the more pronounced the feed flavor and odor. The ob- 
