699 



to feed. Corn silage must be considered as a roughage because it 

 is truly such. Therefore, when silage is used the other roughage 

 fed is decreased in quantity. If clover hay or any other hay of like 

 iture which tends to balance a ration of corn is replaced by corn 

 >ilage which itself is lacking in protein, the ration is widened when 

 jually it should be narrowed. It has been found with cattle, that 

 best results with silage cannot be secured unless protein in some 

 mcentrated form is used, because clover hay is replaced to such 

 extent by corn silage that the influence of the dry roughage as a 

 leans of balancing the ration is very slight. The effect of adding 

 ttonseed meal to a ration of corn, clover hay and corn silage for 

 ittening lambs is shown in Table VIII on the following page. One 

 mnd of cottonseed meal was fed for every seven pounds of corn, 

 these trials, grain was fed according to the appetites of the lambs. 

 [ay was fed in the morning in such quantities as would be consumed 

 ifore time for the next feed. Silage was fed at the evening feed 

 such quantities as would be consumed within approximately an 

 lour. 



Table VIII shows that the addition of a nitrogenous supple- 

 nit did not in the first two trials affect the appetites of the lambs 

 for grain but that in the third trial where larger quantities of silage 

 -ere consumed, it increased the quantity of grain eaten. The quan- 

 ity of roughage consumed was not affected by the cottonseed meal 

 the ration. 



The rate of gain was more rapid in the first trial when no 

 ipplement was fed, the total gain being greater by .7 pound per 

 im'b. In the other two trials, however, cottonseed meal increased 

 rate of gain to such an extent that the average of three trials 

 shows an increased gain of 1.6 pounds per lamb from the mixed 

 ain ration. There was no apparent reason why the first trial 

 mid have given different results from the last two; but in the 

 former trial, nothing in the condition or thrift of the lambs showed 

 ly advantage from the supplemented ration while in the last two 

 ials a beneficial effect was very apparent. 



The feed required to make a pound of gain was less in the 

 irst trial and greater in the last two trials when no supplement 

 ras fed. The cost of gain corresponded very closely to the feed 

 -equirements thereby favoring the unsupplemented ration in the 

 rst trial and the supplemented one in the last two. The average 

 >st shows that with corn at 40 cents per bushel, there was a loss of 

 cents per hundred pounds gain by the addition of cottonseed meal ; 

 corn at 50 cents per bushel there was little difference in cost of 

 lin ; and with corn at 60 cents per bushel, there was a saving of 1 1 

 :ents per hundred pounds gain by the use of the mixed grain ration, 

 value of the lambs was increased 10 cents per cwt. in 1910-11 

 md 15 cents in 1911-12 by the addition of cottonseed meal. 



