The Effect of Feeding Fat to Cows. 271 



milking for each cow separately, and a composite test of the same 

 made each week. In the table above is shown the amomit of grain 

 and tallow consumed each week by each cow. 



It will be seen that the tallow was regularly consmned in full 

 amount by nearly all of the cows. The only exceptions were that 

 Garnet Yalentine refused one feed in the fifth week and one in the 

 seventh week. 



As the season advanced and the pastures began to fail the cows 

 were fed dry corn stalks, and on JSTovember 6th, during the seventh 

 week, they began to be fed corn ensilage of good quality, cari-ying 

 a fair crop of ears, and mixed clover and timothy hay. This date 

 really began the period of winter feeding. 



No visible effect was noticeable in the health of the cows at any 

 time during the experiment from the effect of feeding tallow, and 

 weights made on November 1st and December 3d showed that the 

 cows had practically neither gained nor lost in weight. The yield 

 in milk and fat is shown in Table II. 



It will be seen that in general there was no effect in either the 

 yield of milk or percentage of fat that could be traced to the feeding 

 of the tallow. During the first two or three weeks the percentage 

 of fat rose slightly with several of the animals, notably Garnet Yal- 

 entine and Pet, but toward the close of the experiment the percent- 

 age of fat fell slightly with some of the animals, notably Emma and 

 Freddie. There was a constant downward tendency in the yield of 

 milk with all the animals, due undoubtedly to the advancing season 

 and the change from pasture to winter feed. 



After the experiment had continued for three or four weeks and 

 it was seen that no very marked changes in the quality of the milk 

 were taking place it was decided to select another lot of cows for 

 further experiment. There were in the herd several two-year-old 

 heifers that had recently calved. They were quite thin in flesh and 

 giving small amounts of milk of not very good quality. Several of 

 these heifers were selected for the second lot, the idea being that 

 perhaps they would be more susceptible to radical changes in the 

 food. The second lot of five was selected on October 19th, consist- 

 ing of the following : 



Clara, grade Jersey, 2 years, 9 months old, in milk ten days. 



Dora, If Holstein, 3 years and 2 months old, in milk 1 month and 

 20 days. 



