1918] ANIMAL PRODUCTION. 169 



During the first six weeks tlie grains were mixed with water and fed iuuiio- 

 diately, while for the hist four weelis they were scalded from one feeding to 

 another. The soaliing apparently increased the grain consumed and the gains 

 made, but without materially changing the amount of feed per pound of gain. 



An analysis of the grains, which were grown locally, is appended. 



[Pasturing alfalfa, com, and rape with hog's], D. Hansen (U. S. Dept. 

 Agr., Bur. Plant Indus., Work Huntley Expt. Farm, 1916, pp. 10, 11, fig. 1). — 

 A continuation of work previously reported (E. S. R., 36, p. 171) ou a six-year 

 rotation in which third-year alfalfa and corn were harvested by pigs. One lot 

 of five pigs with an initial weight equivalent to 2,096 lbs. per acre, was pas- 

 tured from May 1 to July 15, 1916, and a second lot of eight pigs with a 

 weight equivalent to 1,424 lbs. per acre was pastured from July 15 to Septem- 

 ber 23, 1916. In addition the pigs were fed 2 lbs. of corn per day per 100 lbs. 

 of live weight. 



During the two periods 758 lbs. of pork was produced. The corn consumed 

 during the season amounted to 1,750 lbs. and the return from the alfalfa crop 

 to $124.72 per acre. 



Four of the pigs used in the second period of the alfalfa -pasturing experi- 

 ment were transferred to a corn plat September 23. In 20 days they gained 168 

 lbs., with a net return of $47.04 per acre for the corn. 



On two corn plats rape was sown between the rows on August 1, but made 

 little growth. Four pigs were put on these plats September 23, and in 38 

 days they had cleaned up the plats. Gains were made at the rate of 586 lbs. 

 per acre, and returned 81 cts. per bushel for the corn. 



Swine management, G. M. Rommel and F. G. Ashbkook (f7. S. Dept. Agr., 

 Farmers' Bui. S74 {1911), pp. 38, figs. 16). — This is a revision of Farmers' 

 Bulletin 205 (E. S. R., 16, p. 400). The industry is treated under the following 

 heads : The merits of the hog, hog-growing sections of the United States, loca- 

 tion of farm for hog raising, number of hogs for a farm, the foundation herd, 

 feeding and management, sanitation in the hog lot, prevention of disease, treat- 

 ment of disease, destruction of vermin, and intestinal worms. 



The present position and futtire prospects of swine breeding in Denmark, 

 P. A. MoKKEBERG {Tidsskv. Landokononii, 1916, Nos. 5, pp. 233-269; 6, pp. 324- 

 336; Dept. Agr. and Tech. Instr. Ireland Jour., 17 {1916), No. 1, pp. 40-56).— 

 This article, based upon a lecture delivered before the Royal Danish Agri- 

 cultural Society, describes the history, development, and future prospects of 

 swine breeding in Denmark. 



The plan of organization and operation of breeding centers ?s explained, and 

 the method of testing the offspring of the stud animals in the breeding centers 

 is outlined. An average of two pigs from each selected sow is sent annually 

 to the experiment stations. From the performance of these pigs data are ob- 

 tained as to age at which killing weight is reached, feed units required to 

 produce a given weight, and quality of the bacon. The results are made the 

 basis of selection of stud animals, those being preferred whose descendants have 

 shown the highest degree of thriftiness and gi'owth energy, and have produced 

 the best bacon. 



It is stated that this plan has been most valuable in improving both the 

 Danish and Yorkshire breeds of swine, the two bacon breeds of Denmark. 



Feeding horses, C. N. Aknett (Montana Sta. Circ. 65 (1917), pp. 73-82). — 

 A discussion of feeds and the feeding of horses, with special reference to Mon- 

 tana conditions. 



Artificial insemination, E. H. Riley (Montana Sta. Circ. 63 (1917), pp. 

 57-66, figs. 7). — General directions ai'e given for the artificial impregnation of 

 mares. 



