1020] ANIMAL PRODUCTION. 467 



In tests with IH brood sows <livi<kMl into 3 lots and kept on alfalfa pasture 

 duriiii,' July and Au^iust tlie lots led c-orn or corn and tankaso as siipplements 

 {rained in wei.dit, while the lot receivin;: no added {Train lost in weijrht. 



The value of mineral and niedieinal mixtures for hogs, D. T. Gray and 

 E. Hu.sTETLKK (Bill. A'. C. Dcijt. Aijr., J/l {11)20), No. 6, pp. J-i; also in Swine 

 Woiii!, 7 (1020), No. 24, pp. 20-23). — Two hog feeding experiments at the 

 Xortli Carolina Experiment Station are reporte<l. The pigs were all unthrifty 

 and showed the characteristic physical evidences of worm infection. In both 

 tests souii' were given a proprietary " hog remedy " administered according to 

 the manufacturer's directions, some were fed a mixture of crushed charcoal, 

 slaked lime, conunon salt, sulphur, and copperas (10:5:4:2:3) and the 

 others received no addition to their grain ration. The grain mixture consisted 

 of shelled corn, wheat shorts, and peanut meal (2:1:1), witli the peanut meal 

 omitted during the initial two weeks of each test. Feeding was entirely in 

 the dry lot. 



Three lots of five 52-lb. pigs were used in the first test, which began in Decem- 

 lier, 191S, and lasted 88 days. Lot 1 (grain alone) made a daily gain of 0.47 

 lb. per head and consumed 7.3 lbs. of feed per pound of gain. Lots 2 and 3 

 received only the anutunts of grain consumed by lot 1, although it was discov- 

 ered that they had appetite for more. The daily gain per head in lot 2 (char- 

 coal mixture) was 0.63 lb. and in lot 3 (hog remedy), 0.71 lb. The feed re- 

 quirement for a jiound of gain was substantially the same in each, viz, 4.8 lbs. 



The second experiment was begun in June, 1919, and continued 142 days. 

 Thej-e were 5 lots of five 37-lb. pigs, lots 1 to 3 duplicating the corresponding 

 lots of the first experiment in treatment and uniformity of grain ration. The 

 daily gains per head in these lots were, respectively, 0.33, 0.43, and 0.42 lb., 

 and the feed consumption per pound of gain 6.6. 5.1, and 5.3 lbs. Lots 4 and 5 

 received all the grain they would eat. Lot 4 (charcoal mixture) gained 1 lb. 

 per day per head and required 4.6 lbs. of gi'ain for a pound of gain. The rate 

 of gain in lot 5 (hog remedy) was 1.15 lbs., and 4.8 lbs. of feed were required 

 for a pound of gain. 



Autopsies were made of all hogs at slaughter, and a table gives the numbers 

 of kidney worms, intestinal worms, and liver abscesses found in each animal, 

 and also similar data for check animals slaughtered at the beginning of the 

 tests. The pigs fed the charcoal mixture or the hog remedy were relatively 

 free from worms and abscesses. 



Experimental work [with poultry], D. T. Gray (North Carolina Sta. Rpt. 

 1919, pp. .'f8-.'j2). — Progress reports on various poultry experiments conducted 

 by B. F. Kaupp in 1918-19 are presented. Results not notetl from other sources 

 are as follows: 



In a grading experiment the original flock (lot 1) had an annual production 

 of 89 eggs per bird. Their offspring by common cockerels (lot 2) had a 3-year 

 average of 92 eggs per bird per year, while offspring by good White Leghorn 

 cockerels (lot 3) hs^d a 2-year average of 135 eggs per year. Brothers of 

 pullets in lot 3 mated to pullets in flock 2 produced off.spring which laid an 

 average of 112 eggs the first year. 



In an uncompleted study of growth as influenced by source of protein it was 

 found that the most rapid early growth and the least deaths occurred when 

 blood meal was fed to the chicks, and that the greatest weight at 16 weeks was 

 attained when buttermilk was fed. The other protein supplements tested were 

 meat scrap, tankage, soy bean meal, and peanut meal. In other experiments 

 velvet bean feed was found to be an unsatisfactory supplement, due it is 

 thought, to injurious material in the pod. 



