Supplemental value of exo-enzyme in the utilization of cassava fibre meal by broiler-chickens

摘要

This study assessed the supplemental value of Roxazyme? G2 in the utilization of cassava fibre meal (CFM) by broiler-chickens in a 56 day feeding trial. A batch of three hundred and sixty day-old Arbor acre broiler-chicks was allotted to twelve treatments replicated five times of six birds in a 4 × 3 factorial in complete randomization. Cassava fibre meal was substituted for maize at 0, 20, 40 and 60% levels and Roxazyme? G2 supplementation was at 0, 100 and 200 mgkg-1. Results showed that CFM substitution at 40 and 60% levels for maize led to significant decrease (p0.05) indicating that performance, carcass and organ description of broiler chickens were not dependent of the two factors under investigation. At starter phase, CFM substitution led to the saving of $0.07-0.08 per cost of feed $/kg weight gain and $0.08-0.13 per cost of feed $/kg weight gain on broiler finisher production. Roxazyme? G2 supplementation only at 100 mgkg-1 led to the saving of $0.03 and 0.01 per cost of feed $/kg weight gain at the starter and finisher stages respectively.