TY - JOUR JF - JSTNAR JO - jwss VL - 6 IS - 3 PY - 2002 Y1 - 2002/10/01 TI - Phosphorus and Protein Utilization in Male Broiler Chickens Fed on Different Varieties of Wheat with and without Supplemental Phytase TT - قابلیت استفاده از فسفر و پروتئین در جوجه‌ های گوشتی نر تغذیه شده با واریته ‌های مختلف گندم با و بدون مکمل فیتاز N2 - Effect of supplemental phytase on phosphorus and protein utilization and performance of broiler chickens fed on eight different wheat varieties were evaluated. The phytate contents of wheat varieties were determined. In a completely randomized design with a 8*3 factorial arrangement, 384 day-old commercial male brioler chicks (HubbardPeterson) were divided into 96 groups, four chicks per group. Each of the 24 experimental diets (eight varieties) and three levels of phytase (zero, 500 and 1000 FTU/Kg) were given to four replicates for a period of 21 days. At 21 days of age, chickens of each replicate were weighed and killed by cervical dislocation. Ileal contents were collected and analyzed for P, N, phytate and chromic oxide. Left tibia of two birds in each replicate were removed, pooled and stored at -20oC for bone ash determination. There was a significant (P SP - 213 EP - 220 AU - J. Pourreza, AU - H. Classen, AD - KW - Phytase KW - Phytate KW - Phosphorus KW - Protein digestibility KW - Broiler UR - http://jstnar.iut.ac.ir/article-1-226-en.html ER -