Response of Broiler Chickens to Addition of Zinc Bacitracin to Diets Containing Salinomycin and Roxarsone

Abstract

Five trials were conducted at various locations to determine the response of broiler chickens to the addition of zinc bacitracin to diets containing both salinomycin and roxarsone. Results indicate that when a combination of salinomycin and roxarsone is used as an anticoccidial, the addition of zinc bacitracin at 33 or 55 mg/kg diet will improve growth rate and feed utilization by broiler chickens. Regression of body weight and feed utilization on dietary levels of zinc bacitracin indicated that each milligram of zinc bacitracin in the diet increased the 49-day weight of broiler chickens by .92 g and reduced the feed required per gram of gain by .0012 g.

Effect of feeding diets containing a probiotic or antibiotic on broiler performance, intestinal mucosa-associated avian pathogenic E. coli and litter water-soluble phosphorus

“…The improved broiler performance on BMD supplemented diets observed in the present study were comparable to a report by Engberg et al (2000) in which BMD supplementation significantly improved body weight gain (~40g) with numerical improvements in FCR of five points. Other trials also showed slight improvement in FCR in diets supplemented with BMD (Stutz et al, 1983;Waldroup et al, 1986). In contrast, a recent study by Teirlynck et al (2009) reported no effect of BMD supplementation on 42 d broiler performance both in wheat/rye based diets and corn based diets.…”