Abstract

THE work of Horton-Smith (1942–43), Swales (1944–46), Hawkins (1943), Levine (1939–41), Farr and Allen (1942), Ripsom and Herrick (1945), Thorp (1947) and Seegar (1946) has shown the value of the sulfonamides in the control of cecal coccidiosis.Delaplane (1945) first reported the use of sulfaquinoxaline as a preventive against enzootic Pasteurella avicida infection in chickens. Delaplane, Batchelder and Higgins (1947) reported that 0.05 percent sulfaquinoxaline in the mash, when given four days out of eight, 50 percent of the time, was effective in preventing Eimeria tenella infection in chickens during the summer months. They also reported that 0.033 percent given continuously in the mash gave good protection against cecal coccidiosis.Further studies of the prophylactic use of sulfaquinoxaline were continued on a commercial poultry farm where 33,126 broilers were given 0.05 percent of the drug with various feeding schedules. The work was carried on for a period .

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