THE INFLUENCE OF FOOD UPON MILK. 
17 
Feeds Selected .—A change was deemed advisable in 
feeding stuffs. Very dissimilar foods were selected, be¬ 
lieving that it is better to compare two or three 
such than to try more, for the reason that it 
is difficult and requires most careful attention to 
details, to be certain from one trial as to the 
results of even two different rations. The selections 
consisted of linseed oil meal, corn meal, and wheat bran, 
with the first cutting of alfalfa and bright oat straw. 
Each kind of concentrated food was fed alone with one 
kind of rough stuff, except when the ration was changed 
to oil meal, at which time some bran had to be added as 
an appetizer. It is seldom that more than 4 pounds of 
oil meal can be fed a cow daily without salivating her, 
but we succeeded in feeding in this case 4.5 pounds, with 
alfalfa, without bad results. Since the question of the 
.amount of food fed is conceded not to be of special im¬ 
portance as bearing upon or influencing the composition 
•of the milk, the animals were given all they would con¬ 
sume without impairing their appetites. They were 
watched most carefully, fed according to their demands, 
and record kept. 
FEEDING PERIODS. 
The length of a period determined upon was ten days. 
1. The six animals were fed alfalfa and bran for ten 
days, for the purpose of testing the milk, and making 
comparison on the same ration as a basis. 
2. Beginning with the eleventh day, we fed one lot 
of three cows (one of each breed) with oil meal and 
alfalfa, and the other three with wheat bran and alfalfa. 
3. Straw was substituted for alfalfa for ten days, 
other feed continued the same. 
4. The conditions of the two lots of cows were 
reversed, giving the first lot wheat bran, and the second 
oil meal. 
