New York Agricultural Experiment Station. 395 



During the month of November clover hay was fed morning and 

 night, beets at noon, and a mixed grain (numbered 11) consisting of 

 one part each of wheat bran and linseed meal O. P., and five parts 

 each of corn meal and ground oats. The grain represented 51.1 

 per cent, of the cost of the ration and supplied 41r.2 per cent, of the 

 total digestible nutrients. The beets represented 17 per cent, of the 

 cost of the ration and supplied 15.1 per cent of the total digestible 

 nutrients. 



For December mixed clover-and-timothy silage was fed at noon, 

 clover hay morning and night and a grain mixture (No. 13) consist- 

 ing of two parts wheat bran, four ])arts ground oats, five parts corn 

 meal and one part linseed meal O. P. The grain represented 52.3 

 per cent, of the cost of the ration and supplied 43.9 per cent, of the 

 total digestible nutrients. The silage represented 15.1 per cent, of 

 the cost, and supplied 18.2 per cent, of the total digestible nutrients. 



For the month of Januaiy clover hay was fed at noon, com silage 

 morning and night and the same mixed grain that was fed in De- 

 cember. The grain represented 51.9 per cent, of the cost of the 

 ration and supplied 43.9 per cent, of the total digestible nutrients. 

 The silage represented 27 per cent, of the cost and supplied 31.5 per 

 cent, of the total digestible nutrients. 



There was an average gain in live weight per cow for November 

 of 12 pounds, an average loss during December of 2 pounds and 

 a gain during January of 5 pounds. The greatest daily average 

 yield of milk for the first period was 25 pounds and the smallest 

 14.8 pounds. The highest average percentage of fat was 6.41 and 

 the lowest 3.35. For the second period the extreme average yields 

 of milk were 23.4 pounds and 14.5 pounds, and the extremes in 

 average percentage of fat 6.19 and 3.25, For the third period the 

 extremes in daily average milk yield were 25.5 pounds and 13.8 

 pounds, and in average percentage of fat 6.45 and 3.30. 



The change in the food from the first period to the second was 

 principally one of clover-and-timothy silage for beets. The change 

 in the grain, intentionally very slight, proved on analysis to be con 

 siderable. The results for the first period are given here in the 

 same table with others for convenience of reference hereafter in 

 another connection than that relating to the effects of corn silage. 



In changing from the second period to the third when corn silage 

 was substituted for the clover-and-timothy silage and part of the hay 

 the cost of the ration was but slightly increased, the amount of 



