摘要
文章旨在研究日粮添加黄芪多糖对肉牛生长性能、免疫及抗氧化功能的影响,试验将 50 头健康、月龄和体重相近的西门塔尔牛随机分为 5 组,每组 10 头牛,每个重复 1 头牛.每组依次在基础日粮中添加 0、1.0、1.5、2.0、2.5 g/kg的黄芪多糖,预饲期 7d,正试期 30 d.结果显示:在日粮中添加黄芪多糖对肉牛生长性能影响不显著(P＞0.05);试验 3、4 和 5 组添加的黄芪多糖可显著提升肉牛的免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、免疫球蛋白G(IgG)和白细胞介素-2(IL-2)含量和过氧化氢酶(CAT)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-Px)活性及总抗氧能力(T-AOC)的活性(P＜0.05),而丙二醛(MDA)含量显著降低(P＜0.05);试验 4 和 5 组之间的IgA、IgM、IgG、IL-2 的含量和CAT、SOD、GSH-Px及T-AOC的活性差异均不显著(P＞0.05).综上所述,日粮添加黄芪多糖可有效提高肉牛的免疫性能和抗氧化功能,以添加 2.0 g/kg的黄芪多糖为宜.
Abstract
To study the effects of adding Astragalus polysaccharides to the diet on the growth performance,immune function,and antioxidant function of beef cattle,50 healthy and similar age and weight Simmental cows were selected and randomly divided into 5 groups,with 10 cows in each group.Each group added 0,1.0,1.5,2.0,and 2.5 g/kg of Astragalus polysaccharides to the basic diet,with a formal experiment of 30 days.The results showed that adding astragalus polysaccharides to the feed had no significant effect on the growth performance of beef cattle(P＞0.05);The addition of Astragalus polysaccharides in groups 3,4,and 5 significantly increased the levels of immune performance indicators IgA,IgM,IgG,IL-2,as well as the activities of antioxidant indicators CAT,SOD,GSH Px,and T-AOC in beef cattle(P＜0.05),while the content of MDA was significantly reduced(P＜0.05);There were no significant differences(P＞0.05)in the levels of immune performance indicators IgA,IgM,IgG,IL-2,and antioxidant indicators CAT,SOD,GSH Px,and T-AOC activity between groups 4 and 5 of the experiment.In summary,astragalus polysaccharides can effectively improve the immune performance,and it is advisable to add 2.0 g/kg of astragalus polysaccharides of beef cattle.
基金项目
2023年度广西高校中青年教师科研基础能力提升项目(2023KY1859)
南宁学院大学生创新创业训练计划(S202111549124@2021)
维普
万方数据