Authors : K. Taibipour and H. Kermanshahi
Abstract: In a completely randomized design with 3�3 factorial arrangements and 4 replicates, 144 day-old Hubbard classic male broiler chickens were used to evaluate the effect of dietary levels of tallow and NSP-degrading enzyme supplements on nutrient efficiency of broiler chickens. The tallow was used at the levels of 0.0, 2.0 and 4.05%. The enzyme levels added into the diets were 0.0, 0.05 and 0.10%. For nutrient digestibility using Cr2O3 as indigestible marker, feces samples were collected from 18-21 days of age. Two birds from each replicate of treatment were killed for ileal digesta collection. Apparent metabolizable energy (aME) in all treatments affected by tallow and enzyme levels (p<0.01). Increasing the level of tallow in the diet significantly reduced apparent lipid digestibility of feces (ALDf) and enzyme addition significantly improved it (p<0.01). This improvement was highest when the level of tallow in the diet was 4%. Apparent protein digestibility (APD) was not affected by treatments but improved when enzyme added to each level of tallow. Apparent lipid digestibility of ileal digesta (ALDi) was significantly reduced by levels of tallow but enzyme addition improved it (p<0.01).
K. Taibipour and H. Kermanshahi , 2008. Effect of Dietary Levels of Tallow and NSP-Degrading Enzyme Supplements on Nutrient Efficiency of Broiler Chickens. Journal of Animal and Veterinary Advances, 7: 1600-1604.