微粒饲料中鱼油n-3HUFA的分子结构对真鲷仔稚鱼生长、存活的影响  

The effects of molecular structure of n-3HUFA in fish oil of microdiets on the growth and survival of red seabream larvae

作　　者：陈晓琳[1] 刘镜恪[1] 徐世宏[1] 

机构地区：[1]中国科学院海洋研究所

出　　处：《海洋水产研究》2004年第6期13-18,共6页Marine Fisheries Research

基　　金：国家自然科学基金项目 (30 371 1 1 4 )资助

摘　　要：制备 3种基本组成相同、添加不同类型鱼油的微粒饲料。将 3种微粒饲料分别投喂真鲷(Pagrusmajor)仔鱼 ,探讨了微粒饲料中鱼油n 3HUFA的不同分子结构对真鲷仔、稚鱼生长、存活的影响。 2 5d的养殖试验结果表明 ,虽然饲料 2中n 3HUFA的含量高于饲料 1中n 3HUFA的含量 ,饲料 3中n 3HUFA的含量同饲料 1中n 3HUFA的含量相等 ,但是用饲料 1投喂的真鲷仔、稚鱼的全长、成活率要优于分别用饲料 2和饲料 3投喂的真鲷仔、稚鱼的全长、成活率。而且 ,用饲料 1投喂的真鲷仔、稚鱼体内n 3HUFA和DHA的含量高于用饲料 2和饲料 3投喂的真鲷仔、稚鱼体内n 3HUFA和DHA的含量 ,这说明真鲷仔、稚鱼对天然鱼油的消化、吸收要优于对乙酯化鱼油的消化、吸收。Three kinds of microdiets( Diet 1, Diet 2 and Diet 3, respectively) were prepared, with similar basic components and different types of added fish oils. The fish oil added to Diet 1 was natural fish oil(triacylglycerols of n-3HUFA), with added amount of 6.0%. Fish oil added to Diet 2 and Diet 3 was ethyl esters of fish oil(ethyl esters of n-3HUFA), with added amounts of 6.0% and 2.86%, respectively. The content of n-3HUFA in Diet 1 was equal to that of n-3HUFA in Diet 3. The content of n-3HUFA in Diet 2 was higher than that of n-3HUFA in Diet 1. Three kinds of prepared diets were respectively fed to red seabream(Pagrus major) larvae to investigate the effects of molecular structure of n-3HUFA in fish oil of microdiets on the growth and survival of red seabream larvae. The results of 25 days' feeding experiment indicated that the growth and survival of red seabream larvae fed with Diet 1 were superior to those of red seabream larvae fed with Diet 2 and Diet 3, although the content of n-3HUFA in Diet 2 was higher than in Diet 1, and the content of n-3HUFA in Diet 3 was equal to that of n-3HUFA in Diet 1. Furthermore, the contents of n-3HUFA and DHA in bodies of red seabream larvae fed with Diet 1 were higher than those of n-3HUFA and DHA in bodies of red seabream larvae fed with Diet 2 and Diet 3. The results showed that the digestion and absorption of natural fish oil for red seabream larvae were superior to those of ethyl esters of fish oil.

关 键 词：微粒饲料 n-3HUFA 天然鱼油 乙酯化鱼油 真鲷仔、稚鱼 

分 类 号：S963.7[农业科学—水产养殖] Q959.483[农业科学—水产科学]