434 Report of the First Assistant op the 



The data secured in a feeding trial extending from March 1st to 

 May 15th are given in table VIII. The results are from eight cows 

 which had been in milk on the average 3.2 months by March 1st 

 and averaged 5.2 years of age. There was an increase April 1st 

 in the amount of silage that had been fed during March and a 

 change in the grain and hay that made a " narrower " ration. A 

 second change was made April 15th in which carrots took the place 

 of the silage. On May 1st there was a change back to silage with 

 some change also in the grain. 



During March corn silage was fed at noon, timothy hay morning 

 and night and a mixed grain (No. 46) composed of three parts each 

 of wheat bran, linseed meal O. P., cottonseed meal and gluten 

 meal, and one jjart each of ground oats, corn meal and wheat mid- 

 dlings. The grain represented 38.6 per cent, of the cost of the 

 ration and the silage 25.8 per cent. The grain supplied 24.2 per 

 cent, of the nutritive substance and the silage 38.2 per cent. 



From April 1st to 15th corn silage was fed morning and noon, 

 and clover hay at night. The grain (No. 47) consisted of five parts 

 wheat bran, three parts linseed meal O. P., two parts corn meal, 

 two parts gluten meal and one part wheat middlings. Of the cost of 

 the ration the grain represented 41.9 per cent, and the silage 40.7 

 per cent. Of the total nutritive substance the grain supplied 29.3 

 per cent, and the silage 53.9 per cent. 



For the latter half of April carrots were fed morning and noon, 

 clover hay at night, and the same grain mixture fed during the first 

 half of the month. Of the cost of the ration the grain represented 

 42.8 per cent, and the carrots 38.8 per cent. Of the nutritive sub- 

 stance the grain supplied 40.8 per cent, and the carrots 35.0 per cent. 



From May 1st to 15th, inclusive, corn silage was fed morning 

 and noon and clover hay at night. The grain mixture (No. 48) con- 

 sisted of four parts wheat bran, two parts linseed meal O. P., two 

 parts cottonseed meal and one part each of wheat middlings and 

 corn meal. Of the cost of the ration the grain represented 43.7 per 

 cent, and the silage 37.9 per cent. Of the nutritive substance the 

 grain supplied 30.4 per cent, and the silage 50.7 per cent. 



During March there was an avei'age gain in live weight of 29 

 pounds. During April there was an average loss of 74 pounds. 

 For the last period of the trial the average gain in weight was about 

 15 pounds. 



