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Research Reports |
Department of Dairy and Poultry Sciences, University of Florida, P. O. Box 110930, Gainesville, FL 32611-0930; Phone: (904) 392-1931; FAX: (904) 392-3047
Statistics Department, Institute of Food and Agricultural Sciences, P. O. Box 110560, University of Florida, Gainesville, FL 32611-0560
Correspondence: M. D. Ouart
Two 42-day studies (one cool season and one warm season) were conducted with day-old commercial broiler chicks to evaluate the influence of several coccidiostats on performance, water intake, and litter moisture. Birds were reared in 1.8 m x 3.7 m floor pens with fresh peanut hulls as litter. The following drugs and drug levels comprised the treatments: control (no drugs); halofuginone, 3 mg/kg; salinomycin, 55 mg/kg; salinomycin, 66 mg/kg; monensin, 99 mg/kg; monensin, 121 mg/kg; lasalocid, 110 mg/kg; lasalocid, 124 mg/kg. Treatment did not significantly affect feed conversion or mortality. Birds fed lasalocid at 110 mg/kg and 124 mg/kg consumed significantly more water at 21 and 42 days. Litter moisture for lasalocid groups was higher than for controls at 21 days. However, 42-day litter moisture was not significantly different from controls. Significant treatment by experiment interactions were found for 21-day body weights and for 21- and 42-day feed consumption values, indicating that birds in some treatments performed differently over the two trials.
Key Words: Broiler performance coccidiostats feed and water consumption litter moisture
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