| Sumario: | Two levels of CM substitution (25 and 50 percent) for industrial concentrate were studied; 3 treatments (with broiler chicks randomly assigned to blocks) during fattening were compared with a check treatment (100 percent industrial concentrate). Slaughter wt. over 1.5 kg/animal were obtained, with the fattening period lasting from 50 to 62 days for the treatments assessed. The cost/kg feed was 0.25, 0.21, and 0.17 peso for the industrial concentrate, 75 percent industrial concentrate/25 percent CM, and 50 percent industrial concentrate/50 percent CM, resp. Likewise, fattening costs $0.10/animal less in treatment 2. (AS-CIAT)
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