| 在循环养殖系统中不同溶氧量对虹鳟幼鱼代谢水平的影响 |
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| 引用本文： | 吴垠,张洪,赵慧慧,李韬.在循环养殖系统中不同溶氧量对虹鳟幼鱼代谢水平的影响[J].上海海洋大学学报,2007(5):437-442. |
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| 作者姓名： | 吴垠 张洪 赵慧慧 李韬 |
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| 作者单位： | 大连水产学院农业部海洋水产增养殖学与生物技术重点开放实验室,辽宁大连116023 |
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| 基金项目： | 辽宁省科技厅资助项目;引进国际先进农业科技计划(948计划) |
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| 摘 要： | 在循环养殖系统中设置四种溶氧水平,分别为7.05、8.82、11.84和15.80 mg/L,其中8.82 mg/L为对照组,对虹鳟幼鱼（体长13.0-18.5 cm）的代谢水平及生长率进行了研究。结果表明,饲养30 d后7.05mg/L的低溶氧使虹鳟幼鱼耗氧率和排氨率下降,11.84和15.80 mg/L溶氧下饲养的鱼耗氧率明显增加,15.80 mg/L使鱼的排氨率显著高于对照组。并且11.84和15.80 mg/L组虹鳟幼鱼在24 h内都具有高的代谢水平。随着溶氧量提高,虹鳟幼鱼的增重率、特定生长率和饲料转化率均随之升高,表现出生长指标的明显变化。
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| 关 键 词： | 虹鳟 封闭式循环养殖系统 溶氧 代谢 |
| 修稿时间： | 2006/10/13 0:00:00 |
Effects of different dissolved oxygen concentration on metabolic level of juvenile rainbow trout (Oncorhynchus mykiss) in the recirculating systems |
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| WU Yin,ZHANG Hong,ZHAO Hui-hui,LI Tao.Effects of different dissolved oxygen concentration on metabolic level of juvenile rainbow trout (Oncorhynchus mykiss) in the recirculating systems[J].Journal of Shanghai Ocean University,2007(5):437-442. |
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| Authors: | WU Yin ZHANG Hong ZHAO Hui-hui LI Tao |
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| Institution: | Key Laboratory of Mariculture and Biotechnology, Agriculture Ministry, PRC,Dalian Fishery Univ, Dalian 116023, China |
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| Abstract: | The metabolic level and growth rate of juvenile rainbow trout(Oncorhynchus mykiss) under four dissolved oxygen concentration(7.05 mg/L,8.82 mg/L of 100% saturation,11.84 mg/L and 15.80 mg/L,respectively)were investigated.The fish(mean initial body lenth 13.0-18.5 cm) was reared in closed recirculated water for 30 days.The results showed the rates of oxygen consumption and ammonia excretion reduced obviously in fish experiening hypoxia condition(7.05 mg/L).At hyperoxic conditions(11.84 and 15.80 mg/L),the rates of oxygen consumption increased significantly,and the rates of ammonia excretion were much higher at hyperoxic(15.80 mg/L) conditions compared to 8.82 mg/L normoxic saturations.In addition,there were actual changes in growth indexes that the growth gain rate,special growth rate and food conversion efficiency showed a clear enhancing tendency,with the increase of dissolved oxygen. |
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| Keywords: | rainbow trout(Oncorhynchus mykiss) closed recirculating system dissolved oxygen concentration metabolic level |
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