【摘要】 为探讨饲料中添加蝇蛆对肉鸡生长性能、血液生化指标和免疫力的影响,在肉鸡饲料中添加不同水平(2.5%、5.0%、7.5%)蝇蛆粉,观察各组肉鸡体重、血清中钙离子、总蛋白、总胆固醇等生化指标和胸腺、脾和法氏囊等免疫器官指数的变化,并对热应激后各组丙氨酸氨基转移酶(ALT)、门冬氨酸氨基转移酶(AST)活性进行测定。结果显示:饲料中添加蝇蛆粉能提高肉鸡生长性能,对血清中钙离子、总蛋白浓度、总胆固醇浓度无显著影响(P>0.05);能显著提高法氏囊指数和脾脏指数(P<0.05);急性热应激后,蝇蛆粉添加组肉鸡ALT、AST活性均显著低于对照组(P<0.05)。结果表明蝇蛆作为天然优质蛋白添加到饲料中,不仅对肉鸡血钙等生化指标无显著影响,还可提高生长性能和免疫力。更多还原

【Abstract】 The effects of maggots on growth performance,blood biochemical index and immunity of broilers were studied.After different concentrations of maggot powder(2.5%,5.0%,7.5%) were supplemented in feed of broiler,we observed the broiler body weight,serum biochemical parameters(including serum calcium,total protein and total cholesterol),immune organ index(including bursal index,spleen index and thymus index),and the changes of serum ALT,AST level after acute heat stress.The results showed that:the supplementation of maggots in broiler feed could improve the growth performance;calcium,total protein concentration,total cholesterol concentration in serum of broilers had no significant differences(P > 0.05);Spleen index and bursal index significantly increased(P < 0.05).After acute heat stress,the serum ALT,AST level from broilers bred by maggots powder were significantly lower than those of control group(P < 0.05).These results suggest that the maggot added to feed as a natural high quality protein,not only had no effect on broiler blood biochemical index,but also could improve the growth performance and immunity.更多还原