| 摘要: |
| 在实验室内进行了8周实验以确定不同体重的异育银鲫的补偿生长。按初始体重将实验鱼分为L[(8.7±0.0)g]、M[(5.3±0.1)g]和S[(3.2±0.0)g]三个规格，每个规格的
鱼或在第1—2周停食，在第3—8周按饱食投喂(停食鱼)或始终按饱食投喂(对照鱼)。结果表明，第2周结束时，停食鱼体重、金鱼脂肪与蛋白质含量明显低于同规格的对照鱼，而全鱼灰分和水分含量高于后者。第3—8周内停食鱼摄食率和特定生长率(SGR)明显高于同规格对照鱼，但饲料效率与后者无明显差异。第8周结束时，停食的M鱼体重与同规格对照鱼无显著差异，停食的L和S鱼体重仍明显小于同规格对照鱼，表明恢复投喂后停食的M鱼实现完全补偿，而L和S鱼为部分补偿。实验结束时停食的M鱼金鱼组成与同规格对照鱼无明显差异，但鱼躯干蛋白质含量和内脏团脂肪含量仍明显低于后者，内脏团蛋白质和灰分含量高于后者；停食的L鱼躯干鱼体组成与同规格的对照鱼无显著差异，但全鱼脂肪和蛋白质含量、内脏团脂肪含量仍明显低于后者；绝食的S鱼内脏团组成与同规格的对照鱼无显著差异，但全鱼脂肪含量以及鱼躯干脂肪和蛋白质含量明显低于后者。 |
| 关键词: 异育银鲫，补偿生长，停食，体重 |
| DOI： |
| 分类号: |
| 基金项目:上海市科技启明星计划资助项目，01QC14038号；淡水生物技术与生态学国家重点实验室开放基金资助项目，2002-2004 |
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| COMPENSATORY GROWTH IN GIBEL CARP(CARASSIUS AURA TUS GIBELIO) THE EFFECT OF INITIAL BODY SlZE |
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CUI Zheng-He, WANG Yan
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Shanghai Fisheries University
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| Abstract: |
| An 8-week experiment was carried out to examine compensatory growth in gibel carp Cnrassius auratus gibelio of diferent body size．Fish in three size groups at(8.7±0.0)g(1arge,L)，(5.3±0.1)g(medium，M)，and(3.2±0.0)g(small fish，S)were used．Fish of each size were fed in regime of 2-week deprivation plus 6-week satiation(deprived fish)，or fed to satiation throughout the experiment(contro1)．At the end of Week 2，the deprived fish in L，M and S groups exhibited lower body weight，lower whole body lipid and protein contents，and higher contents of moisture and ash than those of the contro1. In Weeks 3 to 8,feed intake and SGR(specific growth rate) were higher in the deprived fish than that of control．However, no significant difference was shown in feed eficiency between the deprived and control fish． At the end of Week 8, no significant difference was found in body weight among the M fish，but body weight was lower in the deprived fish of other sizes than the control，suggesting the M fish had complete growth compensation and the L and S fish had partial compensation．There were no significant differences in carcass composition between the deprived L fish and their control，in whole body composition between the deprived M fish and their contro1．and in viscera composition between the deprived S fish and their contro1. The deprived L fish exhibited lower whole body protein and lipid contents and viscera lipid content than those of their contro1, and the deprived M fish exhibited lower carcass protein content and viscera lipid content than those of their contro1, and the deprived S fish exhibited lower whole body lipid content and carcass lipid and protein contents than those of their contro1． |
| Key words: Gibel carp,Compensatory growth, Feed deprivation,Body weigh |
