Microbial Phytase and Phosphorus Utilization by Broiler Chickens

The aim of study was to investigate the mathematical and statistical assesment of the micorbial 6-phytase efficacy on phosphorus utilization at broiler chickens Cobb 500. Broiler chickens fed commercial feed mixtures based on soyabean-maize meal. Each feed mixture was fed ad libitum to chickens in boxes in commercial poultry farm. The trial consited of three groups of broiler chickens, one control group (CG) and two trial groups, in which were broiler chickens fed by feed mixtures with decreased phosphorus content (TG1) and with microbial 6-phytase (TG2). A body weight of chickens at the end of the trial (42 day) was 1900.0 g compared with 1883,0 g (TG1) and 1827.0 g (CG) with not statistically significant differences (P≥0.05). Phosphorus, calcium and magnesium content in blood serum of broiler chickens in every group was not staticstically significant (P≥0.05). Phosphorus content in broiler chickens excreta was most higher in in control group (4.2556 g/kg) in comparison with trial group (2.0911 g/kg) were was microbial 6-phytase added and in trial group (3.1851 g/kg) were was phosphorus content in feed mixtures decreased. In addition we concluded that microbial 6-phytase. Phytase addition into feed mixtures has not negative effect on broiler chickens growth ability and health, and helped to better utilization of phytate phosphorus from feed mixtures in relation to excreted phosphorus.