文章摘要
池塘循环水槽养殖模式下罗非鱼生长及生理响应变化研究
Study on growth and physiological response of tilapia in pond aquaculture system
投稿时间:2018-10-29  修订日期:2019-04-10
DOI:
中文关键词: 罗非鱼  池塘循环水槽养殖模式  高密度应激  生长特性  生理指标  
英文关键词: tilapia  in pond aquaculture system  high density stress  growth characteristics  physiological indicators
基金项目:国家特色淡水鱼产业技术体系(CARS-46);南宁市重点研发计划“罗非鱼池塘循环流水生态养殖技术研究与示范(20172010)”
作者单位E-mail
阴晴朗 上海海洋大学 水产与生命学院 1601824108@qq.com 
罗永巨 上海海洋大学 水产与生命学院 lfylzc123@163.com 
郭忠宝 广西水产科学研究院 广西水产遗传育种与健康养殖重点实验室  
肖俊 广西水产科学研究院 广西水产遗传育种与健康养殖重点实验室  
周毅 广西水产科学研究院 广西水产遗传育种与健康养殖重点实验室  
罗丽莉 广西新农人饲料有限公司
广西新农人饲料有限公司 
 
张孝瑾 上海海洋大学 水产与生命学院  
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中文摘要:
      以吉富罗非鱼(GIFT Tilapia)为研究对象,设计以传统池塘养殖模式为对照组A(5尾/m2),池塘循环水槽养殖模式为试验组B(180尾/m2)和C(270尾/m2),探讨在池塘循环水槽养殖模式下,吉富罗非鱼不同养殖密度的生长特性和生理指标的变化,评估吉富罗非鱼在池塘循环水槽养殖模式下的适宜养殖密度。经过120d的养殖,B组吉富罗非鱼终末体重、特定生长率和绝对生长率显著高于A组和C组(P<0.05);A组存活率最高,C组最低;试验组体重差异系数和饵料系数小于对照组。试验组吉富罗非鱼血清谷丙转氨酶、谷草转氨酶、溶菌酶水平和肝脏HSP70 mRNA的相对表达量在养殖周期内均呈现先上升后下降的趋势。试验组B血清皮质醇、甘油三酯水平在前期与对照组A有差异(P<0.05),葡萄糖水平在整个养殖周期内与对照组无差异;试验组C组皮质醇和葡萄糖水平在整个养殖周期内持续上升(P<0.05),甘油三酯水平在整个养殖周期内无差异。研究结果表明,试验组B吉富罗非鱼在养殖前期受到环境胁迫,中后期逐渐适应环境;试验组C在整个养殖周期内处于应激状态。综合考虑罗非鱼生长和血清指标得出,池塘循环水槽养殖罗非鱼的适宜养殖密度为180/m2,在该密度下罗非鱼能适应养殖环境,养殖效果优于传统养殖模式。
英文摘要:
      To investigate the variety of different stocking density growth performance and physiological indices, evaluate the suitable stocking density of tilapia in pond aquaculture system. Taking GIFT tilapia as the research object, the traditional pond culture model was designed as the control group A (5 tails/m2), In pond aquaculture system was designed as the control group B (180 tails/m2) and C (270 tails/m2). The results show that after 120 days of breeding, final body weight, specific growth rate and absolute growth rate of tilapia in group B were significantly higher than those in group A and C (P<0.05); group A had the highest survival rate and group C had the lowest survival rate; Coefficient of variation of weight and the feed coefficient of the test group were smaller than the control group. The glutamic-pyruvic transaminase, glutamic-oxaloacetic transaminase, lysozyme level and hepatic Hsp70m RNA levels initially increased and then decreased during aquaculture. The levels of cortisol and triglyceride in the test group B were different from in the control group A throughout the culture prophase (P<0.05), glucose levels did not differ from the control group throughout the culture cycle. Cortisol and glucose levels in the test group C continued to increase (P<0.05), and the triglyceride levels did not differ throughout the culture cycle. The test group B tilapia was exposed to environmental stress in the early stage of cultivation, and gradually adapted to the environment in the middle and late stages; test group C was under stress throughout the culture cycle. The result suggested that suitable stocking density of tilapia cultured in pond aquaculture system is 180/m2. In this density tilapia farming can adapt to the environment, and cultivation effect is superior to the traditional farming mode.
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