Phytase And Cellulose Composite Enzymes On Laying Hen Performance And Eggshell Quality

Effects of Phytase and Cellulous enzyme preparation on the Egg Production of Laying Hens and Eggshell Quality Chen Dong Mei (Institute of Animal Nutrition, Sichuan Agriculture University, Ya抋n, Sichuan P.R. China, 625014) Abstract A trial was conducted to study the effects of phytase and cellulous enzyme preparation on the performance of laying hens, eggshell quality and nutrient utilization of diets. 1872 of 27-wk of age Hy-line were randomly allocated to 13 treatments with 4 replicates and 36 birds per replicate. Dietary treatments included: normal diet (Ti), low-density diet (T2), T2+200gIt phytase (T3), T2+400gIt cellulous enzyme preparation (T4), T5-T13 was T2+phytase (300gIt, 200gIt, lOOgIt)+cellulous enzyme preparation (400gIt, 300gIt, lOOg/t). The results showed that: The performance of laying hens with low-density diets was reduced significantly compared to the normal diet (P