570 EXPERIMENT STATION RECORD. 



as the basis of comparison, milo maize, Kafir corn, and sorghum seed each 

 have a higher feeding value when fed with protein supplements, such as shorts 

 and tankage, than when fed with alfalfa hay; that for fattening hogs, milo 

 maize and Kafir corn each have a feeding value slightly lower than corn ; and 

 that sorghum seed, while lacking in palatability, has considerable feeding value. 



"A comparison of wet and dry mixtures of corn, shoots, and meat meal 

 showed an average daily gain per hog of 1.95 lbs. on the dry ration and 2.31 

 lbs. on the wet ration." 



"An average of 3 lots receiving different brands of condimental stock feed 

 with corn, in comparison with a lot on corn meal, shorts, and meat meal, 

 showed an average daily gain of 0.76 lb. with stock feed rations and 1.69 lbs. 

 daily gain on the corn, shorts, and meat meal ration." 



"Hogs fattened on alfalfa and rape pastures made cheaper and more rapid 

 gains than hogs fattened in dry lots. Hogs fattened on rape pasture made 

 gains as cheaply as those fattened on alfalfa pasture. . . . 



" When spring shoats were full fed through the summer on alfalfa or rape 

 pasture and finished in the fall in dry lots, those fed a grain ration of com, 

 shorts, and tankage finished 45 days sooner, averaged 48 lbs. a hog heavier, 

 made gains at a cost of 15 to 20 cts. a hundred pounds less, and sold on the 

 market for from 10 to 20 cts. a hundred pounds more than those fed on corn 

 or corn and alfalfa hay. 



" When spring shoats were grown with a limited amount of grain on alfalfa 

 pasture during the summer and finished in diy lots in the fall and early winter, 

 those finished on corn, shorts, and tankage were ready for market 15 days 

 earlier, weighed 55 lbs. a hog more, required 15 cts. less to produce each 100 

 lbs. of gain, and sold for 20 cts. a hundred pounds more than those finished 

 on corn or corn and hay. 



" Spring shoats that were full fed through the summer and thus pushed for an 

 early market, not considering interest and risk, made gains at an average cost 

 of from 15 to 20 cts. a hundred more than similar shoats grown through the 

 summer on pasture and a small amount of grain and finished in the fall and 

 winter in di*y lots." 



A metabolism experiment with, swine, E. B. Forbes (A'bs. in Science, n. ser.y 

 38 (1913), No. 9S4, pp. 678, 679). >— It is stated that " the usual practical rations 

 for swine contain an excess of acid over basic mineral elements. Urinary 

 ammonia varies directly with this excess of mineral acid, provided the pro- 

 tein intake remains the same. Increased protein intake increases urinary am- 

 monia. This excess of mineral acid in practical swine rations seems not to 

 affect calcium retention. 



"Water drinking caused the elimination of sodium and chlorin; abstinence 

 from drinking leads to the retention. The feces may contain an abundance 

 of sodium, but are nearly free from chlorin. Potassium, magnesium, and 

 chlorin balances were usually positive, but were negative during periods of 

 maximum intake, apparently through overresponse in the way of protective 

 elimination of excess ingested. 



" Calcium retention was satisfactory only on rations containing meat meal 

 containing considerable bone and skim milk. Neither cereals nor soy beans 

 furnish the calcium requisite for growth. An excess of magnesium to calcium 

 caused loss of calcium with a ration of rice polish and wheat bran. The excess 

 of magnesium to calcium in corn and in other practical rations does not appre- 

 ciably restrict calcium retention. 



" The important deficiencies of corn are, in order of magnitude, first, calcium; 

 second, phosphorus; third, nitrogen. 



