1920] 



ANIMAL PRODUCTIOir. 



871 



S 140-lb. hops for 40 days at the Oklahoma Experiment Station are reported. 

 Tlie lot fed corn and tankage n2:l) made an average daily gain of 1.82 lbs. 

 l>or head and required 4.17 lbs. of feed per pound of gain. The lot fed barley 

 and tankage (12:1) made an average daily gain of l.S lbs. and required 4.98 

 lbs. of feed per pound of gain. 



HogRin<;-down experiments [KenUtchy Sta. Rpt. 1919, pt. 1, pp. 39, ^0). — 

 Hogs on a soy bean lield. receiving corn in a self-feeder, produced S44 lbs. of 

 pork and consumed 72.1 bu. of corn per acre. Hogs on a soy bean field with a 

 - ". per cent corn ration made 632 lbs. of pork and consumed 54.3 bu. of corn 

 per acre. Hogs on a field of corn and soy beans grown together, and receiving 

 iHi supplementary feed, produced 350 lbs. of pork per acre. Hogs on a corn 

 Held without supplement produced 355 lbs. of pork per acre, and those turned 

 on a corn field and allowed tankage in a self-feeder produced 616 lbs. of pork 

 ;iiid consumed 145 lbs. of tankage. 



.Seven years' feeding experiments with work horses, N. Hansson {F'iihl- 

 infj'x Landw. Zig., 65 (1916), No. IS-I4, pp. 289-315, figs. 5).— The author re- 

 norts 27 feeding trials with work horses at the Central Station for Agricultural 

 Investigation in Stockholm. The values of the feeds tested were estimated by 

 I lianges in the weights of the aninrals. 



If 1 kg. of barley is used as a feed unit, it was found that the designated 

 ■uuounts of the following materials are each equal to a feed unit: Oats 1.2 kg., 



I orn meal 0.95 to 1 kg., molasses 1 kg., potato flakes 1 kg., shredded sugar beets 



II kg., wheat bran 1.2 kg., oat hulls 1.8 kg., dried matter in cooked potatoes 

 '•!) kg., and dried matter in mangels or carrots 1.1 kg. From 7 to 15 feed units 

 ;iie required per day per head according to the amount of work performed, 

 iind each feed unit should include at least 75 to 80 gm. of digestible protein. 

 Proximate analyses of nraterials fed are tabulated. 



Source [and amount] of protein for hens (Kentucky Sta. Rpt. 1919, pt. 1, 

 l>p. 40-/f2). — Average annual egg yields of hens receiving various protein supple- 

 ments during 1917-18 and 3918-19 are reported. With cottonseed meal the 

 iispective average records were 17.5 and 23.2 eggs, with cottonseed meal and 

 lankage (1:1) they were 77.7 and 86.4 eggs, with tankage 109.4 and 109.8, 

 Mild with buttermilk 114.8 and 149.8. 



In another experiment it was found that when meat scrap formed 5 per cent 

 of the mash the average production was 116 eggs, when 10 per cent 142 eggs, 

 when 15 per cent 149 eggs, and when 20 per cent 158 eggs. The amount of 

 mash fed equaled the amount of grain. 



Comparison of poultry breeds, O. I. Bergh (Minnesota Sta.. Rpt. Grand 

 /.'lipids Substa.. 1915-1919. pp. 71. 72). — The following table summarizes 3 

 M ;irs records of production. The flocks were managed as in a commercial es- 

 lablishment and consisted chiefly of pullets and yearlings. 



Average annual production records of hens of four breeds. 



