324 



EXPERIMENT STATION RECORD. 



Ufrct on hidfcr. — The effect of cotton-seed racal on butter was studied 

 in 2 experiments, 2 cows advanced in the milking period being- used 

 in tlie first and 2 new milch cows in the second. The cows were fed 

 rations composed of hay, silage, corn meal, and wheat bran for periods 

 of about 3 weeks, after which the corn meal and bran were gradually 

 replaced by cotton-seed meal, until in the last period no other grain 

 than cotton-seed meal was fed, and cotton-seed hulls were added. 

 Beginning with 2 lbs. of cottonseed meal per cow daily, the amount 

 was gradually increased to lbs., but this last amount was only con- 

 tinued a short time for fear of injuring the cows. The butter made on 

 each ration was analyzed and the results are tabulated. A summary 

 follows : 



Analyses of huHer produced with and without feedimj cotton-seed meal. 



Food. 



Melt- 

 ing 

 point. 



Vola- 

 tile 

 fatty 

 acids. 



Cows advanced in milk: 



"Herdfeed" 



Do 



Corn meal, bran, and silage . 



Do 



Do 



4 ration of cotton-seed roeal. 



Do 



?> ration of cotton s-'ed meal. 



Do 



J ration of cot ton -seed raeal . 



Do 



Cotton-seed meal and hulls. 

 New niikii cows. 



■•Herd feed" 



!No ciitton seed meal 



Do 



J ratioiiof cotton seed meal - 



Do 



Do 



i ration of cottonseed meal. 



' Do 



I ration of cotton seed meal 



Do 



Nov. 

 Dec. 



\Deg. C. 

 35.9 

 3.5.5 

 33.6 

 33.5 

 33.1 

 34.8 

 35.4 

 37.9 

 38.0 



37.9 

 39. 5 

 41.4 



Jan. 



Pel) 



39.8 

 33.8 



33.4 I 

 35.9 I 

 38.3 I 

 38.5 

 39.0 1 

 40.2 i 



41.5 I 

 41.7 



Cc. 

 15.10 

 18.46 

 17. 65 

 21. 95 

 24.85 

 28.60 

 24.05 

 21.75 

 21.30 



20.60 

 15.45 

 12.15 



22. 35 

 30.42 

 28.95 

 25.60 

 29.95 

 23.40 

 21.95 

 20.00 

 18.52 

 17.03 



lodin 

 num- 

 ber. 



37.92 

 35. 42 

 35.76 

 35.72 

 33.45 

 32. 82 

 32.39 

 35.72 

 32.60 



'27.77 

 35.78 

 42.34 



30.08 

 29.14 

 27.00 

 28.70 

 30.38 

 32.32 

 32.01 

 33.48 

 34.40 

 35.00 



Beeclii's test. 



Decidedlv dark. 



Do. ' 

 Faint color. 

 Verv faint color. 



'Do. 

 Distinct. 

 Dirty brown. 

 Distinct. 

 Dark dirty 



brown. 

 Almost black. 



Do. 



Do. 



Distinct. 

 No color. 



Do. 

 Dirty brown. 

 Dark brown. 



Do. 



Do. 

 Nearlv black. 



Do. 



Do. 



' "Either an abnormal sample or .some error in work." 



The effect of the cotton -seed meal is most noticeable on the melting- 

 point of the butter, which increased steadily with the amount fed. 

 The volatile fatty acids fluctuated greatly, but there appears to be a 

 general decrease on cotton-seed meal. In general the iodin number 

 increased on cotton-seed meal. Beechi's test for cotton-seed, oil with 

 nitrate of silver. Avhicli was faint where no cotton-seed meal was fed, gave 

 a dark, nearly black coloration where that material was fed in consid- 

 erable quantity. 



Effect on lard and sheep .suet. — Analyses were made of 3 samples of 

 lard, 1 from pigs fattened on cottcm-seed meal, another bought in the 

 open market, and a third homemade lard from pigs fattened on corn ; 

 and of fat from the kidney, caul, and body of a sheep fed on corn and 

 another fed on cotton-seed meal. The results are given below : 



