多级分养策略对翘嘴鳜幼鱼生长及水质的影响  

Effect of multi-stage rearing strategy on Siniperca chuatsi fry growth and the water quality

作　　者：方刘[1] 梁旭方[1] 郭小泽[1] 易提林[1] 李娇[1] 孙龙芳 骆小年[1] 沈丹[1] 

机构地区：[1]华中农业大学水产学院农业部淡水生物繁育重点实验室湖北省淡水渔业协同创新中心,武汉430070

出　　处：《淡水渔业》2014年第5期108-112,共5页Freshwater Fisheries

基　　金：珠江流域高产精养池塘健康养殖技术与示范(2012BAD25B04);国家自然科学基金“鳜驯食性状相关基因功能分析与机理研究”(31272641);国家973计划项目(2014CB138601)

摘　　要：为了解早期多级分养对翘嘴鳜(Siniperca chuatsi)的生长及水质影响,用网箱将翘嘴鳜幼鱼在不同培育密度(1000,1500,2000尾/m2)下进行连续三级筛选养殖试验。结果显示,各密度组鳜幼鱼的生长速度存在差异,随着养殖密度的增加,鱼体生长速度降低;存活率在中等密度(1500尾/m2)组最高;在鱼苗3 cm之后,水体氨氮含量显著性升高。结果表明,三级分养策略可以有效提高苗种规格整齐度;使存活率显著性提高。鱼种在幼鱼早期生长速度快,需注意此阶段的营养需求。This experiment studied the effects of early size grading on growth and water quality of mandarin fish （ Siniperca chuatsi ）. Three-stage rearing strategy was carried out in mandarin fish fry at different rearing density （1000, 1500, 2000 individuals per m2 ） in experimental cages. The results showed that, the fish fry growth speed was reduced with the stocking density increaseing. The survival rate of the fry rearing in medium density （ 1500 individuals per m： ） was the highest. After the fry grew up to 3 cm in length, the water content of ammonia inwater increased significantly. The results showed that three-stage rearing strategy could effectively increase fry size uniformity and improve the survival rate significantly. We should also pay attention to the nutritional requirements at the early larval stage for its fast growth.

关 键 词：翘嘴鳜(Siniperca chuatsi) 幼鱼 多级分养 生长 存活 水质 

分 类 号：S962.2[农业科学—水产养殖]