孙大川，谭洪新，罗国芝，吴嘉敏，朱学宝，冯是良
（上海海洋大学水产与生命学院，上海 201306）

摘要：试验对循环水养殖系统中不同养殖密度宝石鲈（50，100，150，220尾/m3）的生长性能及血液生化指标进行比较。结果表明，150尾/m3组宝石鲈的生长较有优势，其特定生长率（1.61%/d）和存活率（89%）均较高，饲料系数较低（1.70）；密度对血液中的谷草转氨酶、谷丙转氨酶和胆红素的影响显著（P＜0.05），随养殖密度增加其浓度呈上升趋势，均在220尾/m3密度组上升最多；密度对血清无机离子（钾、钠、氯、镁、磷）也有影响。综合认为循环水养殖条件下，150尾/m3养殖密度组宝石鲈生长效果较具优势。

关键词：循环水养殖系统；宝石鲈；养殖密度；生长性能；血液生化指标

Effect of stocking density on growth and blood biochemical parameters of Scortum barcoo
Sun Da-chuan, Tan Hong-xin, Luo Guo-zhi, Wu Jia-min, Zhu Xue-bao, Feng Shi-liang
（College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China）

Abstract: This study compares the growth ability and blood biochemical parameters of Jade perch under different densities (50 ind/m3, 100 ind/m3, 150 ind/m3, 220 ind/m3) in recirculating aquaculture system. After the experiments, the main conclusion was got as follows: The Jade perch grows the fastest (1.61%/d) under 150 ind/m3 density than the other groups, at the same time, the survival rate is higher (89%) and feed conversion rate (FCR) is relatively higher (1.70) than that of others. The impact of density on some enzymes (ALT from 97.78 to 279.53 μmol/L, AST from 57.18 to 111.83 μmol/L) and bilirubin of fish blood is prominent; they got the highest level under 220 ind/m3 group especially. And the ion (K+、Na+、Cl－、Mg2+、P) have significant change, ion meet the work of the stress of nerve and muscle.

Key words: recirculating aquaculture system; Jade perch; density; growth ability; blood biochemical parameters

基金项目：国家科技支撑计划项目（2006BAD03B06）；上海市重点学科建设项目（S30701）

作者简介：孙大川（1981—），男，讲师，研究方向：循环水工厂化养殖系统水处理工艺及健康养殖技术。E-mail: dcsun@shou.edu.cn

                                             （来源：《渔业现代化》 2009，36（2），12-15）