276 PRODUCTIVE FEEDING OF FARM ANIMALS 
14. Describe the method of keeping hogs with fattening steers. 
15. Where are the main cattle markets located in the United States? 
16. What do you understand by shrinkage of cattle, how is it influenced, and 
what are the average figures under different conditions? 
17. What is a self-feeder? Under what conditions is its use advisable in 
beef production? 
Literature on Feeding Cattle—Mumford, “ Beef Production,” Urbana, 
Tll., 1908 (see p. 226) ; Barnes, “ Western Grazing Grounds,” Chicago, 1913; 
Ward, ‘‘ Beef Production in the South,” Farmers’ Bulletin 580, 1914; Cotton 
and Ward, “ Economical Cattle Feeding in the Corn Belt,” Farmers’ Bulletin 
588, 1914;Curtis, ‘‘ Some Essentials in Beef Production,” Farmers’ Bulletin 
71, 1898; Bentley, “ Cattle Ranges in the Southwest,” Farmers’ Bulletin 72, 
1898; Armsby, ‘* Feeding for Meat Production,” Bur. Animal Ind., b. 108; 
Gray and Ward, “ Beef Production in Alabama,” Bur. Animal Ind., b. 131, 
159. 
Experiment Station Bulletins, Circulars and Reports.—Ala., b. 103; 
Ariz., b. 50; Ark., r. 89; Colo., b. 102; Fla., r. 01, b. 96 and 102; IIL, b. 9, 
73, 83, 103, 142, ¢. 79, 169; Ind., b. 129, 130, 136; Iowa, b. 75, c. 6; Kan., b, 
47, 67, 130, 132, 198; Ky., b. 108; Mich., b. 247; Mo., b. 76. c. 24; Miss., b. 
136; Mont., b. 58; Neb., b. 85, 90, 93, 100, 105, 110, 116, 117; N. M., b. 57; 
N. D., b. 33, 73; Ohio, b. 193; Okla., r. 701; Penna., b. 118, 124; S. D:, b. 97, 
100, 148; Texas, b. 76, 86. 97, 110, 159; Utah, b. 90; Va., b. 157 and 173; 
Wash., b. 79; Ont. (Guelph), r. ’91. 
