海洋科学2017，Vol.41Issue(3)：32-40,9.DOI:10.11759//hykx20160112003
养殖密度对循环水系统中大菱鲆生长和蛋白质代谢的影响
Effect of stocking density on growth and protein metabolism of Scophthalmus maximus in a recirculating aquaculture system
摘要
Abstract
The aim of this study was to evaluate the effect of stocking density on growth, digestive enzyme activity, and protein metabolism of turbot (Scophthalmus maximus L.) with an initial body weight of (186 ± 2.0) g in a re-circulating aquaculture system (RAS). In this experiment, turbot were reared at three different initial densities (low 9.4 kg/m2 ± 0.2 kg/m2, medium 13.6 kg/m2 ± 0.8 kg/m2, and high 19.1 kg/m2 ± 1.3 kg/m2) for 120 days. Final den-sities were 26.1 kg/m2 ± 1.2 kg/m2, 38.2 kg/m2 ± 2.5 kg/m2, and 52.3 kg/m2 ± 3.6 kg/m2, respectively. The result shows that fish held at the highest density showed a lower (P < 0.05) weight gain rate (WGR), specific growth rate (SGR), condition factor (CF), and protein efficiency ratio (PER) at the conclusion of the study than fish held at lower densities, but the highest density group had a higher (P < 0.05) feed coefficient rate (FCR) than fish held at lower densities. The total protease (TMP) and amylase (AMS) activities of the highest density group were signifi-cantly higher (P < 0.05) than those of the lower density groups, and the three groups did not differ significantly in lipase (LPS) activities. As stocking densities increased, the glutamate dehydrogenase (GDH) activities were sig-nificantly increased and the aspartate transaminase (AST) and leucine aminopeptidase (LAP) activities were sig-nificantly decreased, but the alanine transaminase (ALT) activities were not significantly affected by density. We conclude that increasing stocking density can improve production in a RAS, but high stocking density may impact growth, digestive enzyme activity, and protein metabolism.关键词
循环水系统/大菱鲆(Scophthalmusmaximus)/养殖密度/生长/蛋白质代谢Key words
Recirculating aquaculture system/Scophthalmus maximus L./stocking density/growth/protein metabolism分类
农业科技引用本文复制引用
韩岑,雷霁霖,刘宝良,贾睿,姜志强,赵奎峰,王国文..养殖密度对循环水系统中大菱鲆生长和蛋白质代谢的影响[J].海洋科学,2017,41(3):32-40,9.基金项目
国家自然科学基金资助项目(31402315、31240012) （31402315、31240012）
农业部北方海水增养殖重点实验室开放课题项目(2014-MSENC-KF-02) （2014-MSENC-KF-02）
现代农业国家鲆鲽类产业体系资助项目(CARS-50-G10) （CARS-50-G10）
江苏省重点研发计划资助项目(BE2015328) [Foundation: National Natural Science Foundation of China, No.31402315, No.31240012 （BE2015328）
The Open Subject Programs of Key Laboratory of Maricul-ture & Stock Enhancement in North China's Sea, Ministry of Agriculture, No. 2014-MSENC-KF-02 （）
The Support Program of Modern Agriculture National Flatfish Industrial System, No. CARS-50-G10 （）
Research and Development Program of Jiangsu Province of China, No. BE2015328] （）
