70 EXPERIMENT STATION RECORD. [Vol. 37 



out the test. In the other experiments the pigs were fed on dry lots. In all the 

 tests, except with lots 1 and 2, the feeds in the self-feeders were unmixed. The 

 proportions in which the unmixed feeds were consumed from self-feeders were 

 as follows : 



Lot 3, corn, shorts, and tankage (17.5: 5.6: 1) ; lot 5, corn, shorts, and tankage 

 (18.5:8.1:1); lot 6, corn and tankage (8.9:1); lot 8, corn and tankage 

 (17.1:1) ; lot 10, corn, shorts, and tankage (20.66:3.93:1) ; and lot 12. corn, 

 shorts, and tankage (11.6:0.23:1). 



The cost of gains in these experiments was figured on the basis of 75 cts. 

 per bushel for corn, $1.40 per 100 lbs. for shorts, and $2.50 per 100 lbs. for 

 tankage. 



The author states that while these re'-ults do not warrant definite conclu- 

 sions they indicate that " fattening hogs fed with a self-feeder gain more 

 rapidly than when hand-fed in the usual manner. There is no difference in 

 the economy of gain which can be accredited to the method of feeding. . . . 

 When each feed is placed in a separate feeder the hogs will choose the different 

 feeds, so that the gain will be both rapid and relatively economical. This will 

 perhaps be true only when each feed is supplied in abundance. . . . 



" It is apparent that the advantage which the self-feeder metliod will have 

 in any specific Instance over hand-feeding, in regard to rate of gain, will depend 

 to a large degree upon the ability of the person doing the hand-feetling to feed 

 so tliat the hogs will consume a maximum amount of feed. In practically all 

 cases, when the self-fed hogs gained more rapidly than those which were hand- 

 fed, they also consumed more feed. In a similar manner the relative efficiency 

 of the self-fed ration, and the same feeds hand-fed, will depend upon the ability 

 of the feeder to combine properly the feeds used." 



[Poultry husbandry studies]. P. Moore (Idaho Sta. Dul. 92 {1916), pp. 28- 

 30). — Four pens of 25 White Leghorn pullets each receivetl the following rations 

 for one year: Pen IV a grain ration of peas, wheat, and corn (10: 14: 6), and 

 a mash of bran, shorts, corn meal, wheat meal. p>ea meal, linseed meal, and 

 charcoal (3:3:1:1:1:6:1), the nutritive ratio being 1:4.2; pen V a grain 

 ration of corn and wheat (6: 10), and a mash of bran, shorts, corn meal, wheat 

 meal, beef scrap, and charcoal (2:1:1:1:3:1), with a nutritive ratio of 1 : 4.2; 

 pen VI the same as pen IV, except that the grain ration was in the ratio of 

 1: 10: 5, and the mash three parts of linsee<i meal to one part each of the other 

 ingredients, the nutritive ratio being 1:5.5; and pen VII the same as pen V, 

 except that the mash Ingredients were in the ratio of 2:2.5:1:1:1.5:1, and 

 the nutritive ratio 1 : 5.5. During the year pen V produced 55.8 per cent more 

 eggs than pen IV, 51.1 per cent more eggs than pen VI, and 35.2 per cent more 

 eggs than pen VII. The percentage of eggs under 2 oz. in pen IV was 46.5, in 

 pen V 15.2, in pen VI 41.9, and in pen VII 17.5. 



[Poultry experiments] {Iowa Sta. Rpt. 1916, pp. 27, 2S). — Feeding experi- 

 ments carrleil on at the station indicate that corn is equal, pound for pound, if 

 not superior, to wheat as the basis of a ration for feeding both growing and 

 laying stock. Corn gave results superior to wheat as a food for laying stock 

 during warm weather. To obtain satisfactory results in feeding both wheat 

 and corn, it was found necessary to use some animal food, such as high-grade 

 tankage, meat meal, or skim milk, and also to supplement the grain with mineral 

 food rich in lime and pho.sphate, such as bone meal. 



Experiments indicate that capon production is profitable with the larger 

 breeds of general purpose fowls. Capons produced a net profit of from 25 to 

 40 per cent more than cockerels. 



In experiments with nest eggs of various kinds, It was found tliat hens 

 prefer to lay In nests provided with the natural egg. 



