酵母复合物对受免斑点叉尾鮰免疫应答的增强作用  

Infulence of Dietary Yeast Complex on Resistance of Channel Catfish,Ictalurus punctatus Against Cytophaga columnaris

作　　者：何广文[1] 姚娟[2] 陈昌福[1] 李兆文[2] 

机构地区：[1]华中农业大学水产学院 [2]安琪酵母股份有限公司,湖北宜昌443003

出　　处：《长江大学学报（自科版）（中旬）》2007年第4期45-49,共5页Journal of Yangtze University(Nature Science Edition)

基　　金：科技部国家科技支撑计划项目(2006BAD03B0507);农业部资助项目(2130108)

摘　　要：在饲料中添加定量的酵母复合物,投喂经注射接种福尔马林灭活的柱状嗜纤维菌(Cytophaga colum-naris)菌苗的斑点叉尾鮰(Ictalurus punctatus)28d后,通过测定供试鱼的增重量、血清中凝集抗体效价、溶菌酶活性、谷丙转氨酶活性(SGPT)、血清总蛋白含量、白细胞吞噬活性以及活菌攻毒后的相对免疫保护率(RPS),探讨了在饲料中添加酵母复合物对受免斑点叉尾鮰免疫应答的增强作用。结果表明,用添加200.0mg·kg-1·d-1酵母复合物的饲料投喂受免斑点叉尾鮰,不仅可以使受免斑点叉尾鮰对灭活C.columnaris的免疫应答水平提高,增强抵抗人工感染C.columnaris活菌的能力,而且还具有一定的促进生长和改善供试鱼肝脏功能的作用。Channel catfish(Ictalurus punctatus),inoculated with formalin killed Cytophaga columnaris ,were fed with appropriate amount of yeast complex for 28 days.In order to investigate the infulence of yeast complex on immune enhancement of immunized channel catfish,the gained weight,agglutinating antibody titer,lysozyme activity,serum glutamic pyruvic transaminase(SGPT),total protein in serum,phagocytic activity and relative percent survival(RPS)after challenging with live C. columnaris of experimental channel catfish were monitored. The results showed that adding yeast complex with a ratio of 200.0mg·kg-1·d-1 into the feed of channel catfish can upgrade the immune response level,strengthen their resistance to C. columnaris as well as improving their liver function and prompt their growth to some degree.

关 键 词：酵母复合物 斑点叉尾鮰(Ictalurus punctatus) 免疫激活剂 免疫应答 柱状嗜纤维菌(Cytophaga columnaris) 

分 类 号：S942.1[农业科学—水产养殖] Q959.468[农业科学—水产科学]