646 



was replaced by corn silage. About one third of the dry matter of the 

 hay was substituted by silage ; the grain ration remained unchanged. 

 After 63 days the sihige was dropped and the feeding resumed as 

 before. The yield and composition of the milk and the digestible dry 

 matter eaten are tabulated for each cow before, dnriug, and after the 

 silage feediug. 



In this expeiiiiieut the addition of silage to the ration resulted in a somewhat 

 increased jiroductiou of milk solids, which was not caused by an increase in the 

 digestible food material eaten, but which must have been due either to the superior 

 value of the nutrients of the silage over those of the hay or to the general physio- 

 logical effect of feeding a greater variety of foods. 8.8 jiounds of silage proved to be 

 somewhat superior to 1.98 pounds of hay (mostly timothy), the quantity of digesti- 

 ble material being the same in the two cases. 



An experiment was made with six young steers to test the value of 

 silage for growing animals. In four j^eriods of from 4 to 13 weeks' dura- 

 tion rations consisting of hay and mixed grains, and of hay, 20 pounds 

 of silage, and some mixed grains were fed to all the steers alternately, 

 each ration being fed during two periods. " The amount of hay fed was 

 adapted to the appetite of the animal." The weights of hay and silage 

 eaten and the gains made by each animal during each period are tabu- 

 lated. 



A pound of digestible matter from the corn silage produced somewhat more 

 growth than a pound of digestible matter from timothy hay. The difference was 

 small, however, amounting in the case of the last two periods, where the more accu- 

 rate comparison is possible, to an increased growth of only 15 pounds of live weight 

 for each ton of silage fed. 



Early and late-cut timothy hay for growth. — This is a comparison of 

 the feeding values of the timothy hay cut at blooming, and 15 days later, 

 the relative digestibility of which was determined in a previous exper- 

 iment with sheep, reported above. Six steers were fed from December 

 7 to January 3 on the late-cut hay, and from January 4 to February 

 13 on the early-cut hay. Three pounds of grain were fed per animal 

 daily during both periods. The tabulated results indicate "no partic- 

 ular difference in the feeding value of these two lots of hay. This 

 might be expected after finding that the hay had so little difference in 

 composition and digestibility." 



Feeding value of wheat middlings and ivheat bran. — The feeding value of 

 these two foods, pound for pound, was compared in an experiment with 

 four pigs weighing about 200 pounds each. In period 1 (31 days) two ot 

 the pigs were fed skim-milk and wheat bran, and the two others like quan- 

 tities of skim-milk and wheat middlings; in period 2 (41 days) the pigs 

 were changed from bran to middlings and vice versa, the skim-milk being 

 fed as before. The tabulated results indicate that in this experiment, 

 " where very moderate rations of both middlings and bran were fed in 

 connection with skim-milk, the growth from the middlings ration was 

 over twice that from the bran ratiou, or in the ratio of 110 to 53." 



