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Journal of Veterinary Medicine and Animal Health
This research was conducted to study the efficacy of different growth promoter's on the productive performance and carcass yield of broiler chickens. 840 male ROSS and 308 hybrid chickens were used according to completely randomize the design in six treatments and one control (Five growth promoters and control). Thus, there were six groups of chickens: group 1; control diet (without any promoter's), group 2; control diet + antibiotic, group 3; control diet + probiotic, group 4; control diet +doi:10.5897/jvmah2015.0394 fatcat:gyzbyfnj3fbq5i3jqiwjkse3gm