Effects of lasalocid and monensin against experimentally induced coccidiosis in confinement-reared lambs from weaning to market weight.
1979
: Lasalocid and monensin were incorporated into pelleted feed and evaluated as anticoccidials in confinement-reared lambs from weaning to market weight. A total of 69 lambs were allotted to 3 equal groups that received unmedicated feed (100 mg/kg of food) or monensin-medicated feed (17 to 33 mg/kg). Each lamb was inoculated orally with a suspension of 24,000 oocysts (Eimeria spp) 24 and 52 days after the start of the experiment. Lasalocid and monensin were highly effective (greater than 99%) in eliminating oocysts of 5 species of ovine coccidia used in the inoculum. Treated lambs gained an average of 6 kg more weight (P less than 0.05) per animal than the untreated control lambs and consumed significantly (P less than 0.05) less feed for each kilogram gained. No statistical differences existed between treated groups (P greater than 0.05).
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