No. 33.] ee 59 
express the actual amount of fat yielded per day, and butter churned 
per day from the milk during these periods, assuming that the aver- 
ae of the analyses represent the true character of the total milk 
yields : 
Average 
daily A verage 
Average amount daily butter 
aily of fatby recovered 
milk yield. analysis. by churn. 
Lbs. a Se ise 
Oh TL) See ee 10.13 9.93 6.80 
Remire  ieene he 7.26 8.02 7.42 
Period eee kre ee 8.10 7.66 7.05 
We aoe Lk Seas te 6 Sa sea 5.64 bch. 6.66 
ity 
eancn), Hay ration... 5.03 868. 7.88 7.70 6.73 
Cfebrewers Prains.. 2.3...’ 8.10 7.66 7.05 
If, however, the tables of daily analyses be studied, it will be seen 
that there was a greater variability in the product and yield of the 
cows during the grains feeding, than during the hay feeding, and 
_this effect of the feed may be as rationally attributed to the putridity — 
as to the specific action of the food. We may recall here that the - 
_injudicious feeding of the grains in the beginning exerted an ill effect 
on the appetite of the cows, but under continued and more careful 
feeding, the cows recovered, and the tendency was toward continued 
improvement during the whole of Period C, twenty-seven days. 
We are not justified then in assuming that this experimental trial 
shows definitely against the grains or the putridity even, in respect 
to the greater variability noted. 
In churning the milk of the various periods, it was very notice- 
able that under the hay feeding, or Periods A and D, the milk 
churned more quickly, a lower temperature was required, and the 
butter was in general of a better grain. - Our observations, therefore, 
so far as they go, are in respect to ease of churning unfavorable to 
the use of grains as a feed for cows whose milk is used for butter 
production. 
In respect to the taste, flavor, and appearance of the milk, and also - 
as regards keeping quality, no difference between the hay feed or 
the brewers’ grains fed milk was noticeable, nor as between the milk 
from the experimental cows and that yielded by the remaining cows 
of the herd, except during the starvation days of Period B. 
-. The conclusion must, therefore, be that so far as this trial indicates, 
brewers’ grains are a healthy and valuable food for milch cows, but 
that allowing them to become putrid is a mistake, as preventing the 
full feeding of the animal,and thus being counter to economy. 
The trial also indicates very strongly that the putridity of the feed 
was neither injurious to the cows, otherwise than as stated, nor in- 
jurious to the quality of the milk for human consumption. 
