Effect Of Phytase Supplementation On The Performance , Serum And Bones Biochemical Changes Of Turkeys

Abstract

An experiment was conducted using 60 healthy Bronze turkey poult at the age 4 weeks in order to study the effect of microbial phytase on the performance of turkeys at the age of 16 weeks. The birds were classified into four comparable groups (15 each). The first group was consider as a control group received a basal ration, 2nd, 3rd and 4th groups received a basal ration plus 250, 500 and 1000 gm phytase /ton ration respectively. Phytase supplemented birds consumed more feed than the non-supplemented ones, Addition of 500 and 1000 gm at groups (3 &4) cause increased in Live weight gain and improvement in feed conversion. A significant increase in serum levels of calcium, phosphorus, Magnesium of birds received 500 and 1000 u/kg phytase while phytase supplementation show a significant reduction in serum alkaline phosphatase levels. Dietary phytase supplementation at a rate 500 and 1000 gm phytase show a significant increase in the percent of Ash, Calcium, phosphorus, magnesium and zinc of tibia at groups (3 and 4) than control one. Also, result of this study suggest that fecal calcium and phosphorus was decreased in the groups (3 and 4).

Egyptian Journal of Biomedical Sciences Vol. 23 (1) 2007: pp. 185-195