390 IOWA DEPARTMENT OF AGRICULTURE 



In the full-fed grain lots, the corn averaged better than fifteen pounds 

 in conjunction with approximately 2.5 pounds of supplement, but in the 

 limited-fed lots the total grain feed amounted to approximately five 

 pounds, this being all supplement, either cottonseed or linseed meal. 



In the Iowa results, the supplement was kept the same in quantity, 

 or from two to three pounds of linseed meal per head daily, and the differ- 

 ence made entirely in the corn grain ration, but in Allison's Missouri re- 

 sults on limited feeding he cut out the corn entirely and practically 

 doubled the supplemental feed, allowing about five pounds to the limited 

 corn lots and one-half as much to the full-fed corn group. 



The practical results were, as indicated, in favor of limited grain feed- 

 ing, or, in other words, five pounds of cottonseed or linseed oil meal fed 

 in conjunction with corn silage and some alfalfa hay, was more profitable 

 than a little over 15 pounds of corn plus a little more than 2.5 pounds of 

 supplement in conjunction with silage and some hay. 



In the second test, Allison's two-year-old steers, of about the same 

 weight as the previous year, showed in the cottonseed meal group a dif- 

 ference of $11.60 in favor of the corn being replaced entirely by 4.5 pounds 

 of cottonseed meal. Where linsed oil meal was fed, the difference was 

 $5.55 per steer in favor of replacing the heavy corn and linseed meal ration 

 with 4.5 pounds of linseed oil meal. Of course, as in the Iowa results, the 

 corn silage consumption increased markedly where corn was decreased. 

 In the first test, the full-fed group ate about 17 pounds of silage, whereas 

 those receiving only supplement in addition ate 37 pounds, or more than 

 twice as much. In the second test the difference was between 30 and 48 

 pounds. 



The selling price of the cattle showed a difference in favor of full- 

 feeding in the first test of 2.5 cents on 100 pounds, averaging all lots. In 

 the second test, the difference was greater, or 65 cents a hundred, but yet 

 even with this difference, the margin or so-called profits averaged more 

 than $8 per head in favor of the limited grain feeding. 



In passing, it is profitable to note the differences between cottonseed 

 meal and linseed meal, as worked out by Allison. He added these two 

 supplements to a shelled corn, silage an dalfalfa hay ration (the alfalfa 

 hay limited to from two to six pounds) in the one case and to a silage-hay 

 ration in the other. In all cases the amount of supplement was kept 

 the same. The results show clearly in favor of linseed oil meal for these 

 two-year-old cattle when both the linseed and cottonseed meal cost the 

 same. 



In the first test, with full-fed cattle, the profit per steer receiving 

 linseed oil meal was greater by $2.55; where linseed oil meal as compared 

 to cottonseed meal was added to silage and hay, a difference of $4.69. In 

 both cases, therefore, in the first year, whether the meal was added to a 

 full grain ration with silage and hay or simply to silage and hay, the 

 results show in favor of linseed oil meal. 



In the second year the linseed oil meal added to a full ration showed 

 a difference of $10.08 per head in favor of the fiax by-product over cotton- 

 seed, and where added to silage and hay a difference of $4.03 per head as 

 compared to the southern feed. 



