The bioeconomic effects of the economic traits on the production systems were studied in three genetic groups (B1,B2, B3) and two sexes (S1,S2) of broiler chickens. The genetic groups were the final products of three integrated or semi - integrated commercial and research production systems.me traits under consideration were early growth rate, feed conversion and carcass quality.
Male broilers were superior over the females in early growth rate and feed conversion. Males were also superior in most carcass quality taits, including fat percentage. Exceptions were percent carcass to live weight and percent breast to carcass in which females were superior. The best and the poorest early growth rate were in B2 and Bi, respectively. Feed conversion was not different in B2 and B3 but it was higher in Bi. Most carcass quality traits including percent carcass to live weight, percenthreast to carcass, percent fat to carcass and percent of other parts were the same in 82 and B3, but were lower in B1. B2 and B1 had the highest and the lowest quality in carcss weight, treast weight, leg weight and weight of the other parts. B3 was intermediate in these traits. No significant difference was found in other carcass traits, including percent leg to carcass and fat weight among the genetic groups.
The results from this study generally indicated the bioeconomic superiosity of the B2 production system over that of 83. Both systems were superis over the B1 production system.
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