中国畜牧兽医

• 动物营养与饲料科学 • 上一篇    下一篇

黄芪多糖对免疫抑制肉鸡生长性能、肠道菌群及免疫功能的影响

孙波1,陈静1,吴娟2,刘江3,陈鸿兰1,李卫平1   

  1. 1.毕节职业技术学院农业工程系,贵州毕节 551700;2. 毕节市食品药品检验所,贵州毕节 551700;3. 毕节市动物疫病预防控制中心,贵州毕节 551700
  • 收稿日期:2014-03-28 出版日期:2014-08-20 发布日期:2014-08-22
  • 作者简介:孙波(1971—),男,贵州人,学士,副教授,主要从事动物营养与动物生产教学和研究工作。
  • 基金资助:

    毕节市科技计划“社会发展攻关”项目。

Effect of Astragalus Polysaccharin on Growth Performance,Intestinal Microflora and Immune Function of Immunosuppression Broilers

SUN Bo1,CHEN Jing1,WU Juan2,LIU Jiang3,CHEN Hong-lan1,LI Wei-ping1   

  1. 1.Department of Agricultural Engineering,Bijie Vocational and Technical College,Bijie 551700,China;2.Bijie Institute for Food and Drug Control,Bijie 551700,China;3.Bijie Animal Disease Prevention and Control Center,Bijie 551700,China
  • Received:2014-03-28 Online:2014-08-20 Published:2014-08-22

摘要: 本试验旨在探讨日粮中添加不同水平黄芪多糖对免疫抑制肉鸡生长性能、肠道微生物菌群及免疫功能的影响。选用180只体重相近的健康快大型黄羽肉杂鸡,随机分成4组,每组3个重复,每个重复15只鸡,Ⅰ组饲喂基础日粮,自由饮水;Ⅱ、Ⅲ、Ⅳ组在饮水中添加水溶性氟苯尼考200 mg/L,用药6 d后,Ⅱ组饲喂基础日粮,Ⅲ、Ⅳ组分别饲喂在基础日粮中添加500和1000 mg/kg黄芪多糖的日粮。预试期7 d,正试期35 d。结果表明,与Ⅱ组相比,Ⅲ、Ⅳ组能显著改善免疫抑制肉鸡生长性能(P<0.05),增加免疫抑制肉鸡肠道中有益菌(乳酸杆菌、双歧杆菌)的数量(P<0.05),降低有害菌(大肠杆菌、沙门氏菌)的数量(P<0.05),提高免疫抑制肉鸡免疫器官指数及新城疫抗体效价(P<0.05),降低免疫抑制肉鸡血清中IL-10和IFN-γ含量(P<0.05)。综上所述,日粮中添加500和1000 mg/kg黄芪多糖均能消除氟苯尼考诱导的免疫抑制作用,改善肉鸡生长性能,调节肉鸡肠道的微生态平衡,提高机体免疫功能。

关键词: 黄芪多糖; 肉鸡; 氟苯尼考; 免疫抑制; 生长性能; 肠道菌群; 免疫功能

Abstract: The aim of this study was to explore the effect of different levels of Astragalus polysaccharin on growth performance,intestinal microflora and immune function of immunosuppression broilers.A total of 180 fast large yellow feather chickens with similar weight were randomly divided into 4 groups,with 3 replicates of 15 chicks in each replicate,group Ⅰ was fed with basal diet,free drinking water,groupsⅡ,Ⅲ,Ⅳ were add 200 mg/L water soluble florfenicol in the drinking water,medication for 6 days,then group Ⅱ was fed a basal diet,groups Ⅲ,Ⅳ were fed with basal diet supplemented with 500 and 1000 mg/kg Astragalus polysaccharin,respectively.The pre-trial period lasted for 7 days,and the experiment lasted for 35 days.The results showed that compared with group Ⅱ,groups Ⅲ and Ⅳ was significantly improved the growth performance of immunosuppression broilers (P<0.05),enhanced the number of beneficial bacteria (Lactobacillus and Bifidobacterium) in the gastrointestinal tract of immunosuppression broilers (P<0.05),reduced the number of harmful bacteria (Escherichia coli and Salmonella) in the gastrointestinal tract of immunosuppression broilers (P<0.05),improved the immune organs index and Newcastle disease antibody titer of immunosuppression broilers (P<0.05),decreased the serum contents of IL-10 and IFN-γ of immunosuppression broilers (P<0.05).In conclusion,adding 500 and 1000 mg/kg Astragalus polysaccharin in diet could eliminate immunosuppression effect of florfenicol test,improve the growth performance,adjust the intestinal micro ecological balance and ennhance the immune function of broilers.

Key words: Astragalus polysaccharin; broiler; florfenicol; immunosuppression; growth performance; intestinal microflora; immune function