Effects Of Phytase And Compound Enzymes On Performance And Utilization Of Nitrogen And Phosphorus For Meat Chickens

A total of 288 newly—hatched AA broiler, cockerels were randomly allotted into four dietary treatments with 6 replications of 12 birds. The four experiential diets were as follows :1)corn — soybean meal diet with phosphorus-low and protein-low(double low control), 2)double low control diet supplemented with 500 PTU / kg phytase, 3)double low control diet supplemented with 500 PTU / kg phytase and 0.2 g/kg compound enzymes , and 4)corn-soybean meal diet with normal nutrient levels(commoncontrol). The results indicated that dietary supplementation with phytase alone or phytase plus compound enzymes had significantly(P O.05). significantly (P< 0.05)increased the utilization of phosphorus and nitrogen and consequently decreased excretion of phosphorus and nitrogen for broiler cockerels.