Phytase was applied in poultry diet to study the roles of phytase.The results were reported in this paper:the performance of broilers which fed diet which contained 0 39%～0 35%～0 30% avail-p and added 500IU phytase in 1-21 days,22～42 days,43～56 days differently,matched the results of broilers which fed the diet which contained 0 43%～0 41%～0 38% avail-p;the performance of rearing and growing chicks which fed low p added phytase matched the results of control's;the layer's performance and eggshell quali...
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