472 EXPERIMENT STATION EECORD. [Vol. 30 



2 went through the 90 clays in good shape, averaging 1 lb. per head daily. The 



3 pigs fed copperas went through the test in good condition and made an 

 average daily gain of 1.03 lbs. per head. The third test in 1915 was on the 

 same plan as the second except that both lots were allowed to graze on alfalfa 

 at night. All the pigs went through the 90-day test in fairly good shape, those 

 fed copperas making a daily gain of 1.16 lbs. and the others 1.3 lbs. per head. 



Three experiments were conducted in 1915 in which self-feeding was com- 

 pared with hand feeding. In the first of these, with 8-months-old pigs, 3 pigs 

 fed corn and tankage, balanced according to a feeding standard, gained 1.51 

 lbs. per head daily for 90 days at a cost of 7.45 cts. per pound of gain as 

 compared with 1.58 lbs. at a cost of 5.71 cts. for 3 pigs fed corn and tankage 

 unmixed in a self-feeder. In a similar test with younger pigs for 75 days the 

 hand-fed lot gained 1.54 lbs. per head daily at a cost of 5 cts. per pound of 

 gain, and the self-feeder lot 1.81 lbs. at a cost of 3.73 cts. The third test of this 

 series was similar to the other tw^o except that cotton-seed meal was substituted 

 for tankage and the duration was 60 days. The hand-fed lot gained 1.76 lbs. 

 per head daily at a cost of 4.82 cts. per pound of gain and the self-feeder lot 

 1.85 lbs. at a cost of 4 cts. In these tests the pigs were kept in dry lots and had 

 access to shade, water, salt, and charcoal. 



In an experiment to determine the benefit of either tankage or cotton-seed 

 meal as a supplement to corn and alfalfa pasture 9 pigs averaging 52 lbs. each 

 were fed for 90 days in 3 lots of 3 pigs each. In this test the grain rations 

 were fed in self-feeders. The lot fed corn gained 1.31 lbs. per head daily at a 

 cost of 3.39 cts. per pound of gain, those fed corn and tankage gained 1.35 lbs. 

 at a cost of 3.42 cts., and those fed corn and cotton-seed meal gained 1.25 

 lbs. at a cost of 3.54 cts. 



In a test of black-strap molasses as a substitute for corn 3 pigs fed corn and 

 cotton-seed meal (5:1) gained 1.76 lbs. each daily for 60 days at a cost of 4.82 

 cts. per pound of gain. During the same period 3 pigs fed jnolasses and cotton- 

 seed meal (1:1) gained 1.2 lbs. daily per head at a cost of 7.1 cts. per pound 

 of gain. In this test each of the lots received the same amount of cotton-seed 

 meal. 



In another test 4 65-dny-old pigs from the same litter w-ere fed for 90 days 

 to compare corn alone on dry lot with corn and alfalfa pnsture. The pigs in 

 each of the lots had all the corn they would eat, and those in one lot had access 

 to alfalfa pasture at night. The 2 pigs on corn alone gained 0.33 lb. and those 

 on corn and alfalfa pasture 1.22 lbs. per head daily. In this test the pigs on 

 corn alone returned a profit of 75 cts. each and those on corn and alfalfa pas- 

 ture $5.69 each, valuing the alfalfa pasture at $1. 



In estimating the cost of gains in the above tests corn was valued at 70 cts. 

 per bushel, tankage $50 per ton, cotton-seed meal $25 per ton, and molasses 15 

 cts. per gallon. 



Suggestions are given for the breeding and care of hogs under southern Mis- 

 sissippi conditions. 



Feeding experiment with a mixed feed, O. von Czadek {Zlschr. Landw. 

 Versuchsn: Ostcir., 19 {1916), No. 2, pp. 6,?-70 ) .—Analytical data obtained in a 

 feeding experiment with pigs in which a mixed concentrate of meat and blood 

 meals, cereals, .• nd legumes was used in connection with a basal ration are sub- 

 mitted in detailed tabular form. 



It is concluded in general that the claim that the concentrate used has n 

 specific nutritional action and a stimulating effect on the digestion of the 

 remainder of the ration is not substantiated by the results of the experiment. 



Distribution of public-service stallions in Wisconsin in 1916, A. S. At.kx- 

 ANDER (Wisconsin Sta. Bui. 273 {1916), pp. 64, figs. 3).— It is estimated that 



