饲料中不同维生素E添加量对黄颡鱼幼鱼生长性能及免疫功能的影响  

Effects of vitamin E levels on growth performance and immune function of juvenile Pelteobagrus fulvidraco

作　　者：陈骋[1] 熊晶[1] 左永松[1] 马幸容[1] 刘迁[1] 谭青松[1,2] 杨瑞斌[1,2] 

机构地区：[1]华中农业大学水产学院,湖北武汉430070 [2]农业部淡水生物多样性保护与利用重点开放实验室,湖北武汉430070

出　　处：《中国水产科学》2010年第3期521-526,共6页Journal of Fishery Sciences of China

基　　金：国家科技支撑计划项目(2007BAD37B01);华中农业大学大学生科技创新基金项目(A08119)

摘　　要：本研究探讨了饲料中不同维生素E添加量对黄颡鱼(Pelteobagrus fulvidraco)幼鱼生长和免疫的影响。在以鱼粉、豆粕为蛋白源的基础饲料中分别添加0mg/kg(对照组)、25mg/kg、75mg/kg、125mg/kg和175mg/kg的维生素E配成5种实验饲料。在水温(24.0±3.0)℃下,用上述实验饲料分别饲喂平均体质量约为5.1g的黄颡鱼幼鱼50d。实验结果表明,饲料中维生素E的添加量对黄颡鱼的特定生长率和饲料效率的影响不显著(P>0.05);而添加量为175mg/kg时,黄颡鱼摄食率显著降低(P<0.05);随着饲料中维生素E添加量的增高,黄颡鱼血浆超氧化物歧化酶(SOD)的活性未产生显著变化(P>0.05);添加量为125mg/kg和175mg/kg时,血浆中丙二醛(MDA)的含量显著降低(P<0.05);白细胞吞噬指数随添加量升高显著上升(P<0.05),而吞噬百分率没有显著变化(P>0.05)。综合以上结果,饲料中添加适量的维生素E可适当改善黄颡鱼的摄食,增强黄颡鱼的非特异性免疫力和抗氧化能力,从而提高动物的健康状况。推荐在黄颡鱼幼鱼饲料中添加125mg/kg的维生素E。This study investigated effects of dietary vitamin E supplementation levels on growth performance and immune responses of Pelteobagrus fulvidraco.A basal diet was formulated with the soybean and fishmeal as protein source,and five experimental diets were prepared by adding 0 mg/kg,25 mg/kg,75 mg/kg,125 mg/kg and 175 mg/kg vitamin E,respectively.A growth trial was conducted by feeding fish（mean body weight 5.1 g）with the five experimental diets for 50 d under water temperature o（f24.0±3.0）℃.The results showed that no significant difference in specific growth rate（SGR）and feed efficiency（FE）of P.fulvidraco was observed among all vitamin E treatment groups （P0.05）.However,feeding rate（FR）in 175 mg/kg group decreased compared with control group（P0.05）. Superoxide dismutase activities（SOD）were not affected by dietary vitamin E levels（P0.05）.Plasma MDA contents decreased（P0.05）in 125 mg/kg and 175 mg/kg vitamin E groups.Phagocytosis index showed increasing trend（P0.05）with dietary vitamin E level increasing,while phagocytosis percentage showed no significant change （P0.05）.In conclusion,optimal supplementation of vitamin E could improve feed efficiency,non-specific immune response and anti-oxidant ability of P.fulvidraco.It is recommended that the appropriate supplementation level of vitamin E in the diet for juvenile P.fulvidraco would be 125 mg/kg.

关 键 词：黄颡鱼 维生素E 生长 免疫功能 

分 类 号：S931[农业科学—渔业资源]