بررسي اثر متقابل سطح پروتئين جيره،‌ كنجاله‌ كنجد و آنزيم فيتاز بر صفات عملكرد، لاشه و فراسنجه هاي خوني بلدرچين ژاپني

Effects of different dietary protein and sesame meal levels supplemented with phytase on performance, carcass traits and blood parameters of Japanese quail

اين آزمايش به منظور بررسي اثر سطح پروتئين جيره و مقادير مختلف كنجاله كنجد مكمل شده با آنزيم فيتاز بر صفات عملكرد، لاشه و فراسنجه هاي خوني بلدرچين ژاپني انجام گرفت. تعداد 360 قطعه جوجه مخلوط بلدرچين ژاپني يك‌روزه بين 36 واحد آزمايشي تقسيم شدند. يك طرح كامل تصادفي با قالب فاكتوريل 2×3×2 شامل دو سطح پروتئين جيره (24 و 20 درصد)، سه سطح كنجاله كنجد (صفر، 12 و 24 درصد) با و بدون مكمل آنزيمي فيتاز با 12 تيمار، 3 تكرار و 120 قطعه جوجه در هر تكرار در دوره سني 8 تا 42 روزگي انجام گرفت. كاهش سطح پروتئين جيره به طور معنيداري سبب بهبود نسبت راندمان پروتئين مصرفي، كاهش مصرف خوراك و ميزان اسيد اوريك خون شد (0/05

An experiment was performed to evaluate the effect of different dietary protein and sesame meal levels supplemented with phytase on performance, blood parameters and carcass characteristics in Japanese quail. A number of 360 day old mix-sexed Japanese quail were divided among 36 units. A completely randomized design with factorial design 2×3×2 inclusive consists of two levels of dietary protein (24 and 20%), sesame meal levels (0, 12 and 24%) with and without of phytase with 12 treatments and 3 replicates and 120 chicks per treatment was employed at the age of 8 to 42 days. Reducing dietary protein level was significantly improved protein efficiency ratio, reduced feed intake but uric acid levels were significantly increased (P<0.05). Sesame meal consumption resulted in reduced feed intake and feed conversion ratio and lower blood cholesterol (P<0.05).Inclusion of phytase to the diets had no significant effect on performance, blood parameters and carcass characteristics. According to the results of present study formulating of quail diets with low level of protein and using of sesame meal up to 24% could improve performance and carcass traits without any negative effects on physiological characteristics. In addition, this type of diets improved serum biochemical metabolite concentrations such as uric acid and cholesterol.