ANIMAL PRODUCTION. 907 



"The relative demand for light and heavy hogs changes with the season, heavy 

 hogs being in greater demand in the winter and light hogs in the summer months. 



"Owing to the time required to develop a hog, and to the fact that most pigs are 

 farrowed in the spring, the supply of hogs is not in harmony with the demand. 

 Light hogs are the most plentiful in the fall and winter, and heavy hogs during the 

 summer. This is contrary to the demand, and has a depressing influence on the 

 market." 



The swine industry in Australia, W. G. McKinnky (Jour. Dept. Agr. West. 

 Australia, 9(1904), No. 6, pp. 449-45-5). — The adaptability of different breeds of 

 swine to local conditions is discussed, together with related topics. 



Farm poultry, J. 8. Jeffrey (Bid. North Carolina Stale lid. Agr., 25 (1904), No. 

 9, pp. 3-28, figs. IS). — Poultry houses and yards, breeds, feeding and management, 

 incubation, parasites, and related topics are discussed. 



Poultry and bees (Queensland Agr. Jour., 14 (1904), No. 3, pp. 179, 180).— Data 

 are given regarding the poultry and bees kept at the Queensland Agricultural College. 



South African experience in the rearing and management of poultry, K. 

 Ulyate (Agr. Jour. Cape Good Hope, 25 (1904), -V"- 4, pp. 448-4-5? ', figs. 3). — A dis- 

 cussion of the general subject of poultry breeding, feeding, and related topics. 



Extending the poultry industry by traveling teachers and by breeding 

 inspectors, Attinger ( Vrtljschr. Bayer. Landw. Rat., 9 (1904), No. 4, pp- 489-512). — 

 Existing conditions are spoken of and suggestions for improving the local poultry 

 industry are presented. 



The proportion of animal food in the ration for ducklings, W. P. Wheeler 

 (New York Stair sta. Bui. 259, pp. 16).— Earlier experiments (E. S. R., 11, p. 76) 

 having shown that rations containing animal food give better results than those of 

 apparently equal nutritive value consisting largely or altogether of grain, tests were 

 made to learn how much commercial animal feed could be safely and effectively fed. 



In the first test 2 lots were fed a ration in which approximately 0.9 of the dry 

 matter and 98 per cent of the protein were derived from animal sources, the ration 

 being made up of meat meal, animal meal, dried blood, milk albumin, and bone 

 meal with some green alfalfa. The It) younger ducklings (2 weeks old at 

 the beginning of the test) were fed for approximately 2 months. In the first 

 month the average gain in weight was 27.9 oz., the dry matter eaten per pound of 

 gain 3.2 lbs., and the cost of feed per pound of gain 6 cts. During the last month 

 similar values were 20.3 OZ., 7.5 lbs., and 13.7 cts. 



The 8 older birds (7 weeks old at the beginning of trial) were fed for 6 weeks. 

 In the first month the average gain per duckling was 42.9 oz., the dry matter taten 

 per pound of gain 4.1 lbs., and the cost of feed per pound of gain 7.9 cts. During 

 the remaining 2 weeks of the period the average gain per bird was 2.9 oz. Although 

 animal foods made up so large a proportion of the ration no ill effects were noted. 



In another test the relative value of different proportions of animal food was stud- 

 ied with 3 lots of 28 and 1 of 27 ducklings 1 week old at the beginning of the test. 

 The rations were made up of different proportions of animal meal, grain mixtures, 

 corn meal, wheat middlings, and green alfalfa. In the case of lot 1 on an average 12 

 per cent of the dry matter and 20 per cent of the protein of the ration was derived 

 from animal foods, the ash constituents representing 21 per cent of the dry matter. 

 For the whole test which covered 10 weeks the average gain per duckling was 71.7 

 oz., the dry matter eaten per pound of gain 3.9 lbs., and the cost of feed per pound 

 of gain 5.4 cts. 



With lot 2 the animal food furnished about 40 per cent of the protein and 26 per 



cent of the total dry matter of the ration, the ash constituents representing 24 per cent 



of the dry matter. The average gain was 78.8 oz., the dry matter eaten per pound 



of gain 4 lbs., and the cost of feed per pound of gain 6 cts. In the case of lot 3 



25503— No. 9—05 6 



