The application of enzyme phytase in feed mixtures for reduction of phosphorus content in poultry faeces
1995
Zobac, P. | Kumprecht, I. | Simecek, K. (Vyzkumny Ustav Vyzivy Zvirat, Pohorelice (Czech Republic))
The activity and optimal conditions for the efficiency of phytase of enzymatic preparation NATUPHOS were studied in experiments in vitro. The maximum effect of phytase of this preparation was found at temperatures between 50-55 degrees C and environmental pH 5.0. Pepsin in HCl environment at pH 2.1 and temperature of 40 degrees C for 30 min decreased the activity of phytase in preparation NATUPHOS by 18.83 %. The effect of phytase of enzymatic preparation NATUPHOS in feed mixtures with a decreased level of phosphorus in the form of dicalcium phosphate (DiCaP) on selected parameters of utility was studied in a feeding comparative and metabolism trial with chicken broilers. The decrease by 50 % or total absence of DiCaP in feed mixtures BR 1 and BR 2 negatively affected parameters of growth, feed consumption, Ca and P deposition in the tibia and Ca and P digestibility. The addition of enzymatic preparation NATUPHOS positively affected all parameters studied. The application of enzymatic preparation NATUPHOS in mixtures BR 1 and BR 2 with 50 % and 0 % share of DiCaP resulted in decrease of phosphorus percentage in poultry faeces (by 27.50 to 48.68 %).
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