Poultry waste in isonitrogenous and isoenergetic diets for finishing swine

Abstract

An experiment was carried out to evaluate the biological and economic effects of adding poultry waste for finishing pigs. The 200 crossed Landrace x Large White barrows, started the test with 51.39 ± 0.20 kg and ended with 92.75 ± 1.04 kg. The experimental design was the completely randomized with four treatments and five replications. The treatments were, inclusions of 0, 5, 10 and 15% of poultry waste in isonitrogenous and isoenergetics diets for finishing swine. The above percentages in sequence showed mean daily weight gans of 831 ± 25, 753 ± 33, 764 ± 22 and 759 ± 29 g and feed gain ratios of 3.30 ± 0.074, 3.56 ± 0.042, 3.44 ± 0.062 and 3.49 ± 0.106 without significative differences (P>0.05). Negative significant linear effects (P<0.05) for digestible dry matter, (DDM = 89.353 - 0.540 X: R² = 0.86), crude protein digestibility coefficient (CPDC = 86.053 - 0.593 X; R² = 0.68), digestible energy (DE = 3916.230 - 8.553 X; R² = 0.39), dressing percentage (DP = 75.620 - 0.163 X; R² = 0.20), cool carcass weight (CCW = 73.908 - 0.468X; R² = 0.20) and. loin lard thickness (LLT = 3.438 - 0.048 X; R² = 0.22). The lower cost was for the treatment without poultry waste, but prices of ingredients could change and promote the use of this byproduct.