EFFECT OF DIET FORMULATION STRATEGIES ON BROILER PRODUCTION PERFORMANCE, CALORIC EFFICIENCY, CARCASS CHARACTERISTICS AND ECONOMIC INDICES

Abstract

This study evaluated the effect of diet formulation strategies on broiler production performance, caloric efficiency, carcass characteristics, and diet economics.  In this study, 400 day-old and straight-run Cobb 500 broiler chicks were randomly allotted to 1 of 4 treatments, following a randomized complete block design, There were 10 replicated cages per treatment with 10 birds in each cage, A total of 4 corn-cassava meal-soybean meal diets were formulated using ingredient values for AME and digestible amino acids from: 1) PHILSAN (2008) reference standards; 2) Brazil reference standards (Rostagno et al., 2011); 3) INRA reference standards (Sauvant et al., 2004); and 4) near infrared reflectance spectroscopy (NIRS) predicted values (Precise Nutrition Evaluation Adisseo NIRS Service, Singapore). Results showed that broilers fed diets formulated using the Brazil feed ingredient database had the best (P<0.05) overall F/G and greatest (P<0.05) economic return among the treatments.