FOODS ANIMAL PRODUCTION. 75 



Ln the first period tbe nutritive ratio of the rations fed to the four 

 lots and the corresponding gains made were — Lot 1, 1:5.3, 21.38 kg. : 

 lot 2, 1 : 6.2, 22.63 kg. ; lot 3, 1 : 5.3, 23 kg. ; lot 4, 1 : 5.3, 24.13 kg. In the 

 seeond period the corresponding figures were — Lot 1, 1:5.56, 26 kg. ; 

 lot 2, 1 : 0.6, 26.75 kg. ; lot 3, 1 :5.<S, 26.38 kg. ; lot 4, 1 : 5.8, 26.13 kg. ; and 

 in the third period, lot 1, 1 : 6.1, 35.88 kg. ; lot 2, 1 : 1.73, 36.88 kg. ; lot 4, 

 1:6.6.36.13 kg. 



In every case the greatest gains were made on the ration with the 

 widest nutritive ratio. One kilogram of skim milk was found to be 

 equivalent to 125 gin. of peas. In tbe author's opinion the cooked peas 

 were to be preferred to the soaked peas. 



At tbe couelusiou of the test the pigs were slaughtered. Data are 

 given concerning the live weight, dressed weight, thickness of belly 

 fat, and bacon. Tbe percentage of water, iodin value, melting point, 

 and viscosity of tbe fat were determined. Tbe test is discussed at 

 some length from a financial standpoint. Substituting whey for part 

 of the skim milk in lot 2 effected a saving of $2.40, estimating skim 

 milk at 0.6 ct. and whey at 0.15 ct. per kilogram. It was calculated 

 that 1 kg. of skim milk gave a return of 1.152 cts. 



Horse feeding : Tests of the digestibility of oats, hay, and the 

 "new corn product," H.J. Patterson (Maryland Sta. Bui. 51, pp. 

 46). — Tests were made with two horses weighing about 850 and 950 

 lbs., respectively, to determine tbe digestibility of timothy hay, oats 

 (whole and ground), shelled corn, corn meal, and the "new corn prod- 

 uct." The new corn product is prepared by grinding cornstalks, from 

 which the blades, husks, and pith have been removed, into meal which 

 in general appearance resembles coarse bran, dried malt sprouts, or 

 brewers' grain. 



The digestion experiments were usually of fourteen days' duration, 

 nine days being regarded as a preliminary period. Analyses were 

 made of tbe food and feces, and the nitrogen in the urine was deter- 

 mined (except in the test with ground oats), thus giving data for the 

 study of the metabolism of nitrogen. The digestibility of timothy hay 

 was first determined. In the rations in which hay was fed with other 

 materials the amount of hay digested was deducted from the total 

 amount digested in determining tbe coefficient of digestibility of the 

 other materials. 



In one instance tbe horses were fed a mixed ration containing no 

 coarse fodder except tbe new corn product. It was made up as follows: 

 New corn product 50 per cent; hominy chop, ground oats, ground rye, 

 and linseed meal each 10 per cent; and gluten meal and wheat bran 

 each 5 per cent. In the author's opinion such a ration possesses an 

 advantage over ordinary rations, as all the ingredients, including the 

 coarse fodder, can be mixed together. 

 2234— No. 1 6 



