Effect of Phytase Enzyme Supplementation in Deficient Phosphate Diet on Broiler Performance and Some Blood Traits

The experiment was conducted to determine the effect of microbial phytase in Ca deficient and available aP diets on broiler performance and some blood traits. Three hundred day-old chicks (Ross 308) were distributed into five equal groups with two replicates. The control diets (T1) contained Corn-SBM, 0.9% Ca and 0.40% aP without enzyme, whereas T2, T3, T4 and T5 contained Corn-SBM, 0.60% Ca and 0.30% aP+1000 phytase/ kg; T2+ 2000 phytase /kg; Corn-SBM, 0.30% Ca and 0.20% aP + 1000 phytase /kg; T4 + 2000 phytase/ kg respectively. All diets were formulated to be iso-caloric (3150 kcal/ kg) and iso-nitrogenous (20.2%).Supplemented diets with 2000 units phytase kg resulted in a significant decrease in feed consumption (P ≤ 0.05) with the lowest for (T5), while no significant effects on weight gain, carcass dressing, carcass cuts, and Giblets. In addition, none of the biochemical and hematological parameters tested differed significantly for all treatments (P ≤ 0.05). Phytase supplementation to diets did not influence calcium, phosphorus, and iron contents with no detrimental impact on blood parameters of broiler chicks.