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黄芪多糖对肉仔鸡生长性能和免疫功能的影响 被引量:33

Effects of Astragalus polysaccharides on growth performance and immunity of broilers
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摘要 试验旨在研究日粮黄芪多糖(APS)对肉仔鸡生长性能和免疫功能的影响。试验选择1日龄健康艾维茵肉仔鸡(公、母各半)300只,随机分为5个日粮处理组,每个处理组6个重复,每个重复10只鸡,对照组饲喂基础日粮,其他4种试验日粮分别在基础日粮中添加0.1%、0.5%、1%和2%的黄芪多糖配制而成。试验期42d。结果表明,日粮中添加APS可提高肉仔鸡平均日增重、平均日采食量,降低料肉比,对肉仔鸡的生长性能有促进作用,其中以1%APS组效果最佳。日粮中添加APS可提高肉仔鸡新城疫抗体滴度和血清IgG、IgM与IgA浓度,促进外周血T淋巴细胞亚群的增殖,其中以0.5%~1%组的促进效果较好。当APS添加量增加到2%时,各指标均呈下降趋势.综合生长和免疫指标,肉鸡日粮中APS的最佳添加剂量为1%。 The present study was conducted to determine the effects of Astragalus polysaccharides on growth performance and immunity of broilers. Three hundred 1-d-old Avian broilers were randomly allotted to five dietary treatments with six replicate cages per treatment and ten chickens per cage. Five diets were prepared for the study. Control diet was the basal diet without Astragalus polysaccharides. The other four diets were formulated by the addition of 0.1%,0.5%, 1% and 2% of Astragalus polysaccharides to the basal diet, respectively. The feeding trial lasted for 42 days. The results showed that Astragalus polysaccharides improved the average daily gain and average daily feed intake, depressed the ratio of feed to gain, and had a better growth-promoting action, especially, the dose of 1% had the best effect. The dietary Astragalus polysaccharides increased the Newcastle disease antibody titer in serum and the peripheral blood T lymphocyte clusters of differentiation(CD3+, CD4+, and CD8+), and raised serum immunoglobulin A, M, and G in broilers, and the dose of 0.5%-1% Astragalus polysaecharides performed better effects. However, the addition of 2% Astragalus polysaccharides to diet was less effective. In conclusion, the broiler chickens fed a diet containing 1% Astragalus polysaceharides had higher growth performance and immune functions compared with birds given a control diet.
出处 《饲料工业》 北大核心 2014年第2期19-24,共6页 Feed Industry
基金 内蒙古自治区高等学校科学研究项目[NJZY11309]
关键词 黄芪多糖 肉仔鸡 生长性能 免疫功能 Astragalus polysaccharides broilers growth performance immunity
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