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生物絮团在斑节对虾养殖系统中的形成条件及作用效果
引用本文:邓吉朋,黄建华,江世贵,李涛,杨其彬,周发林,邱丽华.生物絮团在斑节对虾养殖系统中的形成条件及作用效果[J].南方水产,2014(3):29-37.
作者姓名:邓吉朋  黄建华  江世贵  李涛  杨其彬  周发林  邱丽华
作者单位:[1]南京农业大学无锡渔业学院,江苏无锡214182 [2]中国水产科学研究院南海水产研究所,广东广州510300
基金项目:现代农业(虾)产业技术体系建设专项资金(CARS-47);国家高技术研究发展计划(863计划)项目(2012AA10A409);广东省海洋渔业推广专项(A201201802,A201201C01);广东省农业科技成果转化资金项目(2012NL026);广西科技成果转化项目(1346004-6);中国水产科学研究院基本科研业务费项目(2013A0502)
摘    要:为确定斑节对虾(Penaeus monodon)养殖系统中生物絮团形成所需的最适碳源及添加量,试验选取葡萄糖、蔗糖、糖蜜3种碳源按碳(C)与氮(N)比(C/ N)为20:1添加,再按日投饲量的0%、25%、50%、75%和100%添加蔗糖,以期获得其最适添加量。结果显示,添加3种不同糖作为碳源均可以显著提高斑节对虾的特定生长率(P ﹤0.05),而添加蔗糖可以显著提高斑节对虾的成活率(P ﹤0.05);与其他组相比,添加75%的蔗糖组可以显著提高斑节对虾的特定生长率和成活率(P ﹤0.05),促进异养细菌和浮游植物的繁殖,水体氨氮(NH4-N)、亚硝酸氮(NO2-N)等有害物质的浓度较低,过多的添加蔗糖却会起到反作用。结果表明添加75%的蔗糖最适合生物絮团在斑节对虾养殖系统中形成,并促进斑节对虾的生长。

关 键 词:生物絮团  斑节对虾  碳源  特定生长率  成活率

Conditions for bio-floc formation and its effects on Penaeus monodon culture system
DENG Jipeng,HUANG Jianhua,JIANG Shigui,LI Tao,YANG Qibin,ZHOU Falin,QIU Lihua.Conditions for bio-floc formation and its effects on Penaeus monodon culture system[J].South China Fisheries Science,2014(3):29-37.
Authors:DENG Jipeng  HUANG Jianhua  JIANG Shigui  LI Tao  YANG Qibin  ZHOU Falin  QIU Lihua
Institution:1. Wuxi Fisheries College, Nanjing Agricultural University, Wuxi 214182, China; 2. South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China)
Abstract:To determine the optimum carbon source and dosage for bio-floc formation in Penaeus monodon culture system,we added three kinds of carbon source including glucose,sucrose and molasses in the culture system at C/ N ratio of 20: 1. The sucrose was added into the culture system at daily feeding ratios of 0% ,25% ,50% ,75% and 100%. Results show that all carbon sources tested in the present study could significantly increase the special growth rate(SGR)of P. monodon(P ﹤ 0. 05). Sucrose could significantly increase the survival rate(SR)of P. monodon(P ﹤ 0. 05). Compared with the other groups,75% of sucrose could significantly improve the SGR and SR of P. monodon(P ﹤ 0. 05),and sucrose could promote heterotrophic bacteria and phytoplankton reproduction,and indirectly reduce concentration of harmful substances in water such as NH4-N and NO2-N,but adding excessive sucrose would be counterproductive. The results reveal that adding 75% of sucrose was the most suitable condition for bio-floc formation in P. monodon culture system,which could promote the growth of P. monodon.
Keywords:bio-floc  Penaeus monodon  carbon source  special growth rate  survival rate
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