نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری، دانشکده کشاورزی، دانشگاه ارومیه
2 دانشیار، دانشکده کشاورزی، دانشگاه ارومیه
3 استاد، دانشکده کشاورزی، دانشگاه ارومیه
4 استادیار، گروه شیمی آلی، دانشکده شیمی، دانشگاه ارومیه
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
This experiment was conducted to evaluate the effect of different levels of iron (0, 40, and 80 mg/kg) with iron sulfate source (FeSO4) on performance, internal organ weights and immune response of boiler chicks in periods of whole production (w: 1-42 days of age), grower and finisher (GF: 11-42 day of age) and finisher (F: 25-42 day of age) using a 3×3 factorial experiment. The results showed that the utilization of 80 mg/kg FeSO4 significantly (P<0.05) decreased daily feed intake of broilers during T period. The addition of 40 mg/kg FeSO4 into the diet significantly decreased the relative weights of jejunum, ileum and whole intestine (P<0.05). The relative weight of bursa of Fabricius was higher in chicks fed 40 mg/kg FeSO4 supplement in F period as compared to birds fed control diet (P<0.05). The positive effects was observed on blood monocytes in chicks fed diet containing FeSO4 supplement during F period compared to T period (P<0.05). Furthermore, the inclusion of 40 and 80 mg FeSO4/kg diet linearly (P<0.01) increased blood lymphocytes percentage of broilers. According to the results of this experiment, it seems that the utilization of 40 and 80 mg/kg FeSO4 can improve carcass quality by reduction of small intestine weight and have beneficial effects on immunological responses of broiler chicks especially during F period.
کلیدواژهها [English]