Abstract:

Abstract: Chooses 40 weeks age health Hiran brown shell layer 1200, divides into 3 groups stochastically, supposes 1 control group and 2 experimental group. 2 experimental groups feed in the control group foundation to increase 300、 600 U/kg phytases separately the date grain, its nutrition standard relative control group reduced 0.1%、0.2% effective phosphorus separately. Trial period 30 days, in the research layer feed increases the phytase to substitute the partial calcium hydrogen phosphate to the layer performance trait、 egg shell thickness、 the egg quality and the feed cost influence. The test result indicated: Produces in the layer feed to increase 300 U/kg phytases to substitute 0.1% effective phosphorus and the control group performance trait compares, the intensity of laying enhanced 1.8%, the egg has been heavy, 、 egg shell thickness、 the egg quality (unit) 、picked in the appetite statistics the difference not remarkable (P>0.05), . Increases 600 U/kg phytases to substitute 0.2% effective phosphorus and the control group compares, the intensity of laying enhanced 1.7%, but egg shell thickness reduced 2.8%, the egg heavy、 picks the appetite、 the egg quality (unit) to count on the difference not remarkable (P>0.05).