中华鲟幼鱼循环饥饿后的补偿生长和体成分变化  

Compensatory growth and biochemical composition after experiencing cycles of feed deprivation and re-feeding in juvenile Chinese sturgeon,Acipenser sinensis

作　　者：鲁雪报[1] 肖慧[1] 张德志[1] 朱欣[1] 饶军[1] 胡亚平[1] 

机构地区：[1]中国三峡开发总公司中华鲟研究所,湖北宜昌443100

出　　处：《淡水渔业》2009年第3期64-67,63,共5页Freshwater Fisheries

基　　金：葛洲坝集团公司科技进步基金资助项目

摘　　要：研究中华鲟(Acipenser sinensis)幼鱼循环饥饿后的补偿生长和体成分变化。实验设4个循环饥饿组(T1:饥饿1 d,饱食投喂3 d;T2:连续饥饿2 d,饱食投喂4 d;T3:连续饥饿4 d,饱食投喂6 d;T4:连续饥饿7 d,饱食投喂8 d)和1个对照组(T0:每天饱食投喂)。结果显示:在水温21.5～25.4℃条件下,T1组末重和特定生长率均超过对照组,表现为超补偿生长;T2组末重和特定生长率均接近对照组,表现为完全补偿生长,T1、T2组食物转化率均显著高于对照组;T3、T4组实际摄食水平均明显高于对照组,但表现为不能补偿生长。4个循环饥饿组幼鱼肝体比及脏体比均显著高于对照组。各组肌肉蛋白质和脂肪含量下降,同时水分和灰分含量上升;从饥饿2 d组开始,蛋白质和脂肪含量显著低于对照组,且蛋白质含量比脂肪含量下降幅度更大。A study was conducted to determine compensatory growth and biochemical parameters after experiencing cycles of starvation and satiation re-feeding in juvenile Chinese sturgeon （Acipenser sinensis） reared at 21.5 ～ 25.4℃. 375 fish were divided into 5 experimental groups with triplicate groups of 25 fish each, including one group with continuous satiation feeding （ control, TO ） and 4 other groups which were starved for 1 d and fed for 3 d （ T1 ）, starved for 2d and fed for 4 d （ T2 ）, starved for 4 d and fed for 6 d （ T3 ） and starved for 7 d and fed for 8 d （ T4 ）. The results showed that both T1 and T2 fish exceeded or reached the same weight and specific growth rate （SGR） as the control fish after re-feeding, indicating that over or completely compensatory growth through raising feed conversion eflqciency occurred. Although the actual feeding rate in T3 and T4 fish were significantly higher than To fish after re-feeding, neither T3 nor T4 fish reached the same weight and SGR as To fish at the end, hence T3 and T4 fish showed a negative compensatory growth; Hepatosomatic index and viscerosomatic index in each test group was all significantly higher than control group; In muscle, protein and lipid were metabolized and replaced by moisture and ash from group T2, in addition, protein content reduced more greatly than lipid content.

关 键 词：中华鲟(Acipenser sinensis) 饥饿 再投喂 补偿生长 身体成分 

分 类 号：S965.215[农业科学—水产养殖] Q959.463[农业科学—水产科学]