New York Agricultural Experiment Station. 423 



In table VI are given the results of a short feeding trial in June 

 with twelve joiing cows of the average age of 3 years. They had 

 been in milk on the average 7.1 months. 



For the first half of the month corn silage was fed in the morn- 

 ing, green alfalfa fodder at noon and mixed hay at night. The 

 grain fed (No. 17) consisted of four parts wheat bran, four parts 

 ground oats, five parts corn meal and two parts gluten meal. The 

 grain represented 52.4 per cent, of the cost of the ration and the 

 silage and green fodder 24.6 per cent. The grain supplied 38.3 per 

 cent, of the digestible nutrients and the silage and green fodder 

 37.7 per cent. 



For the latter half of the month, alfalfa fodder was fed morning 

 and noon and hay at night. The grain was not changed. The 

 grain represented 54.5 per cent, of the cost of the ration and the 

 green fodder 21.7 per cent. The grain supplied 36.2 per cent, and 

 the green fodder 40.9 per cent, of the digestible nutrients. 



During the latter period when alfalfa fodder was substituted for 

 the silage, somewhat more food was eaten and there was in conse- 

 quence a little more digestible matter. The cost of the ration was 

 somewhat lessened. The nutritive ratio was made narrower. There 

 was little change in the milk flow but the milk showed a lower per- 

 centage of fat. There was little change in the cost of milk and a 

 slight increase in the cost of fat. 



There was an average gain in weight of 21 pounds during the 

 month. For the lirst period the greatest daily average milk 

 yield was 22.6 pounds and the smallest 11.0 pounds, the highest 

 average percentage of fat was 5.71 and the lowest 2.76. For the 

 last period the extremes in daily average milk yield were 23.9 

 pounds and 10.0 pounds and in average percentage of fat 6.17 

 and 2.80. 



