生物学杂志

生物学杂志

• 研究报告 • 上一篇    下一篇

不同条件对中华绒螯蟹扣蟹摄食生物絮团的影响

  

  1. 上海海洋大学 农业部淡水水产种质资源重点实验室， 上海 201306
  • 出版日期:2017-12-18 发布日期:2017-12-18
  • 通讯作者: 永旭，博士，教授，研究方向为甲壳动物营养繁殖学，E-mail:yxcheng@shou.edu.cn
  • 作者简介:孙中勇，硕士，研究方向为基于生物絮凝技术下的投喂模式对中华绒螯蟹的生长影响，E-mail:1205436207@qq.com
  • 基金资助:
    农业公益性行业科研专项项目(201203081)；上海市科技兴农推广项目（沪农科推字2015第1-7号）；上海海洋大学博士科研启动基金（A1-2056-16-0004）；港澳台科技合作专项（L2015TGA1006）

Effects of different bioflocs conditions on feeding of Eriocheir sinensis

  1. Key Laboratory of Freshwater Aquatic Genetic Resources， Ministry of Agriculture，Shanghai Ocean University， Shanghai 201306， China
  • Online:2017-12-18 Published:2017-12-18

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摘要： 生物絮凝技术是一项具有降低饲料系数、提高养殖动物成活率和减少养殖污水排放等特点的先进水产养殖技术，已成熟应用于鱼虾的集约化养殖中。旨在探究生物絮凝技术在中华绒螯蟹扣蟹养殖上的适用情况。从摄食环境（曝气，水草）、摄食时间以及絮凝浓度3个角度探讨了适宜扣蟹摄食的絮凝水体环境，通过肠道饱满指数以及肠道充塞度来评估摄食差异。结果表明：絮凝浓度达到500~600 mg/L的絮凝即可满足扣蟹摄食；摄食2 h后，扣蟹肠道即可达到饱和；摄食相同时间情况下，絮凝水草组的摄食量显著高于絮凝曝气组和絮凝不曝气组（P<0.05）。

关键词: 生物絮凝, 扣蟹, 摄食

Abstract: Biofloc technology is a technique of reducing the feed coefficient and improving the survival rate of aquaculture animals and reducing the row of aquaculture sewage. It has been matured in the intensive culture of fish and shrimp. The aim of this experiment was to investigate the application of biofloc technology in Eriocheir sinensis breeding. In this experiment, suitable biofloc conditions for feeding crab were discussed from the feeding environment (aeration and aquatic plants), feeding time and flocculation concentration. The feeding differences were evaluated by intestine fullness index and intestinal filling. The results showed after feeding for 2 h, intestinal could be saturated; within the same feeding time, the intestine fullness index and the filling degree of the group with aquatic plants were significantly higher than those of other groups (P < 0.05); intermediate levels of bioflocs (TSS between 500 and 600 mg/L) appeared to be more suitable to super intensive culture of Eriocheir sinensis.

Key words: biofloc technology, Eriocheir sinensis, feeding