【摘要】 240只商品代海兰蛋雏鸡被用来研究黄芪多糖(AstragalusPolysaccharide,APS)和益生菌(Prof鄄itableMicrobe,PM)对雏鸡生长和免疫的促进作用。鸡只按体重随机分为4组,每组6个重复笼,每重复笼10只。试验为期6周,自由采食和饮水。第1组为空白对照组,2、3、4组为试验组,在基础日粮基础上分别添加220mg/kg黄芪多糖、4×107cfu/g益生菌剂以及220mg/kg黄芪多糖+4×107cfu/g益生菌剂。试验鸡于每周末称体重和耗料量,计算料肉比;分别于第3周和6周末心脏采血制备血清并称称脾脏和法式囊重量。试验结果:黄芪多糖、益生菌和合生元均能显著提高雏鸡周增重(p<0.05),减少饲料消耗(p<0.05),降低料肉比(全期分别降低13.96%、15.26%和12.34%,p<0.05),但未发现合生元组雏鸡生产性能与黄芪多糖和益生菌组有明显差异(p>0.05);试验组雏鸡血清总蛋白含量较对照组升高(p>0.05),葡萄糖则降低(p>0.05);法式囊和脾脏指数合生元组均显著高于空白组、黄芪多糖组和益生菌组(p<0.05);试验组雏鸡血清新城疫抗体效价均较空白对照组升高(p<0.05),且以合生元对新城疫抗体效价的提高优于黄芪多糖和益生菌。更多还原

【Abstract】 The effects of compounds of Astragalus polysaccharide (APS) and profitable microbe (PM) on growth performance and immune function of chicks were studied. 240 Hy-Line chicks were randomly divided into 4 groups with 6 replicates (10 chicks per replicate). The experiment last 6 weeks and feed and water were provided freely. The basic diet of the 4 groups was the same and treatments were as follows: control (no APS and no PM), 220mg/kg APS, 4×107cfu/g PM and 220mg/kg APS+4×107cfu/g PM. In the end of every week of the trial, chicks and forage consumption were weighed and feed/growth were calculated; In the end of third and sixth week, blood was sampled in the heart and then chicks were slaughtered to weigh Bursa of Fabricius and Spleen. The results showed: All of APS, PM and the compounds could significantly increase Average Growth of Each Week (p<0.05), decrease forage consumption (p<0.05), lower feed/growth (the decrease was respectively 13.96%, 15.26% and 12.34%, p<0.05). But it did not show that there is no significant difference of growth performance between PM+APS group and APS group or PM group (p>0.05). Compared to the control group, serum total protein of the trial groups are higher (p<0.05), but serum glucose is lower (p<0.05). The index of Bursa of Fabricius and Spleen of APS+PM group are both significantly higher than the others (p<0.05). Serum antibody titer to Newcastle disease vaccine of the trial groups are higher than the control group (p<0.05), and the effect of APS+PM group is the best remarkable.更多还原