Tests ivith Feeding Stuffs. 



399 



637. Hominy feed. — Hills of the Vermont Station^ found that 

 hominy feed in the ration for dairy cows was fully equal to wheat 

 bran, but somewhat less valuable than gluten meal or a mixture of 

 equal parts of cotton-seed meal and linseed meal. (158) 



638. Germ-oil meal. — In a feeding trial with 4 cows at the Ver- 

 mont Station,- Hills compared a mixture of equal parts of germ-oil 

 meal and wheat bran with one composed of 1 part cotton-seed meal, 

 1 part linseed meal, and 2 parts wheat bran. In a second trial the 

 germ-oil meal and bran mixture was compared with ground oats. 

 The roughage consisted of mixed hay and corn silage. In both trials 

 the returns were in favor of the germ-oil meal. (158) 



639. Oil cakes v. grain. — The Copenhagen (Denmark) Station^ 

 compared the feeding value of a mixture of ground barley and oats 

 with a mixture of equal parts by weight of palm-nut, rape-seed, and 

 sunflower-seed cake fed to 240 cows on several farms. In each series 

 of trials 3 lots of cows were fed as follows : Lot I, three-fourths 

 grain mixture, one-fourth oil cake; Lot II, one-half grain mixture, 

 one-half oil cake; and Lot III, one-fourth grain mixture, three- 

 fourths oil cake. 



Comparative feeding value of oil cahe and mixed grains. 



Average daily milk yield, lbs. 

 Average per ct. of milk solids 

 Average per ct. of fat 



Lot I, 

 '4 grain 

 '. oil cake 



21.7 



11.9 



3.2 



ILot II, 



% srain 



>2 0il cake 



22.9 



11.9 



3.2 



Lot IIL 

 /4 grain 

 '4 oil cake 



23.4 



11.8 



3.2 



The table shows a decided increase in milk flow following the 

 larger use of oil cake in the ration. It was calculated that for each 

 100 lbs. of oil cake substituted for the same amount of mixed grains 

 there was a gain of 66 lbs. of milk, provided the oil cake did not 

 constitute more than half of the concentrates of the ration. Feed- 

 ing oil cake to this extent in the ration therefore proved economical. 

 European dairymen wisely use the various forms of oil cakes (oil 

 meals) in the rations for their cows. All the vast quantity of cot- 

 ton-seed and linseed cake now going abroad should find use on Amer- 

 ican farms. (536-9) 



640. Linseed meal v. cotton-seed meal. — At the Pennsylvania Sta- 

 tion* Waters and Hess compared old-process linseed meal with cot- 

 ton-seed meal. Nine cows were used, the ration at first consisting of 



Rpt. 1904. 



-■Rpt. 1901. 



■Rpt. 1892. 



Ept. 1895. 



