1920] ANIMAL PRODUCTION. 773 



1.76 lbs. per head and required 4.41 lbs. of feed per pound of gain. A check 

 lot fed lankase in place of tislnneal made an average daily gain of 1.45 lbs. 

 and required 5.17 lbs. of feed per pound of gain. 



[Swine feeding e.vperinients in Canada] {Canada Expt. Farms Rpt. 1910, 

 pp. 21, 22; IJfS. 159, 16^, 168, 169). — The.se pages contain brief summaries of 

 swine feeding experiments, including those given more in detail in the three 

 publications noted below. 



I'asture exp«'rinients with swine at the Central Experimental Farm are re- 

 ported by E. S. Archibald (pp. 21, 22). A lot of 29 pigs on one acre of clover 

 pasture selected concentrates from a self-feeder in the following proportions: 

 Corn 62.2, shorts IS.S, screenings 11.4, and tankage 5.6 per cent. The clover 

 pasture had greater carrying capacity than either rape or barley and pro- 

 duced gains more cheaply than the latter. A group of 19 sows on one acre 

 of rape pasture received only a small amount of grain for 69 days. The litters 

 produced in this time averaged 8.9 pigs each, and of these 70 per cent were 

 raisetl. Fifteen of the sows were continued for a month long(T on rape, hut 

 received a ration of 2.3 lbs. of grain. The litters averaged 7 pigs, and all were 

 raised. Ten sows fed in a dry lot on bran and shorts (1:1) during these 99 

 days produced 12 pigs per litter but raised only 45 per cent. 



Tests with Berkshire pigs at Scott, Sask., reported by M. J. Tinline (p. 159), 

 indicated a daily gain per head of 1.98 lbs. for self-fed lots and 1.32 lbs. for 

 hand-fed lots. The grain required for a pound of gain was 4.46 and 5.27 lbs., 

 respectively. 



Tests at Lethbridge, Alta., reported by W. H. Fairfield (p. 164), showed that 

 25 grade Berkshire pigs on 4.9 acres of field peas made a gain of 260 lbs. per 

 acre from August 1 t<> November 4. 



Value of hog pastures in pork production, B. C. Milne (Live Stock Jour. 

 [London], 92 (1920), No. 2415, p. 80).— From 2 to 5 years' work with different 

 pasture crops at the Lacombe, Alta., Experimental Station are summarized. 

 The following average amounts (in pounds) of supplemental grain w^ere re- 

 quired to produce a pound of pork on the different pastures : Barley 3.69, wheat 

 4.27, oats 4.38, alfalfa 4.64, rape 4.71. and sweet clover 5.68. A pound of gain 

 in dry-lot feeding was prQfluced by 4.93 lbs. of grain. Sweet clover was not 

 eaten readily by young pigs and thus made rank growth. That this pasture 

 was less economical than dry-lot feeding is attributed in part to the greater 

 activity of tlie pigs. 



Oats provided the most pasture, carrying fully 1,000 lbs. more pork per acre 

 than barley. 



The cost of producing pork, G. H. Hutton (Farmer's Advocate and Home 

 Jour., 54 (1919), No. 137S, p. 277. figs. 4). — Average results are reported of three 

 years' tests at the Lacombe, Alta., Experimental Farm to determine the rela- 

 tive economy of three breeds of swine in producing pork. Pigs in the first 

 test (winter of 1916) were fed in the dry lot on oats, barley, and tankage. 

 The 1917 pigs were fed shorts and tankage and had access to timothy and 

 alsike clover pasture. The 1918 pigs were on a rape pasture and received grade 

 A screenings and tankage. 



The Yorkshire pigs required 4.09 lbs. of concentrates for a pound of gain, 

 the Duroc-Jerseys 4.69 lbs., and the Berkshires 4.71 lbs. The dressing percen- 

 tages (based on weights before shipping) in 1917 and 1918 averaged 74.62 for 

 the Yorkshires, 74.47 for the Duroc-Jerseys, and 72.05 for the Berkshires. The 

 Yorkshire sows averaged 10.8 pigs per litter and raised 7 to weaning, the 

 Berkshires averaged 9.1 at liirth and raised 6.4, and ttie Duroc-Jerseys aver- 

 aged 8.4 and raised 7.4. 



