Previous Articles     Next Articles

Study on application of recirculating aquaculture system for Litopenaeus vannamei

  

  1. (1 College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China;
    2 Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fishery Research Institute of Chinese Academy of Fishery Sciences, Qingdao 266071, China;
     3 Qingdao Excellence Ocean Group Co. Ltd, Qingdao 266400, China)
  • Online:2019-06-05 Published:2019-04-20

凡纳滨对虾循环水养殖系统应用研究

  

  1. （1 上海海洋大学水产与生命学院，上海 201306；
    2 农业农村部海洋渔业可持续发展重点实验室，中国水产科学研究院黄海水产研究所，山东 青岛 266071；
    3 青岛卓越海洋集团有限公司，山东 青岛 266400）
  • 通讯作者: 曲克明（1964–），男，研究员，研究方向：工厂化养殖和水处理技术、养殖环境优化与调控技术等。 E–mail: qukm@ysfri.ac.cn
  • 作者简介:张龙（1992–），男，硕士研究生，研究方向：循环水养殖水处理工艺设计及运行管理。 E–mail:zhanglong712504@163.com
  • 基金资助:
    科技部重点专项 (2016YFE0112600）；山东省博士后创新项目专项资金（201703050）；青岛市博士后应用研究项目

PDF (PC)

Abstract: With Litopenaeus vannamei of indoor industrial flow-through aquaculture (IIFA) as control group, an experiment on Litopenaeus vannamei of recirculating aquaculture in the farm (85 d) was conducted to compare the effects of different aquaculture models on the growth performance of Litopenaeus vannamei and the aquaculture water quality, and investigate the change in nitrification efficiency of recirculating aquaculture system (RAS). The results indicate that the survival rate (74.58%±1.74%), feed conversion rate (70.56%±3.82%) and production (3.91±0.49 kg/m3) of Litopenaeus vannamei of RAS are significantly higher than the survival rate (66.90%±3.80%), feed conversion rate (67.14%±3.25%) and production (3.47±0.42 kg/m3) of Litopenaeus vannamei of IIFA (P < 0.05). For Litopenaeus vannamei of RAS, the mass concentrations of COD, NH4+–N and NO2-–N are stabilized at a lower level (5.92, 0.60 and 1.14 mg/L). For the control group, the mass concentration of COD presents an upward trend, and the highest value is up to 15.37 mg/L, while the mass concentrations of NH4+–N and NO2-–N fluctuate in a comparatively wide range (0.20–2.90 mg/L and 0.19–6.97 mg/L). However, for Litopenaeus vannamei of RAS, the mass concentrations of NO3-–N and TAN in aquaculture water present a gradual upward trend, and the highest values are up to 25.98 and 33.55 mg/L respectively; for the control group, the mass concentrations of NO3-–N (0.94-2.85 mg/L) and TN (5.95-14.01 mg/L) in aquaculture water vary in a comparatively small range. RAS for Litopenaeus vannamei plays a vital role in nitrification of aquaculture water; the removal rate of NH4+–N and NO2—N is 23.78%-91.43% and 0%-27.76% respectively, and the accumulation rate of nitrate is stabilized in a certain range (0.57%–4.30%). The study shows that the application of RAS can effectively control the key water quality indexes of aquaculture water for Litopenaeus vannamei, which is beneficial to the improvement of survival rate and the increase of aquaculture production.

Key words: Litopenaeus vannamei, RAS, water quality, nitrification efficiency

摘要： 以凡纳滨对虾室内工厂化流水养殖（IIFA）为对照组，通过养殖场凡纳滨对虾循环水养殖试验（85 d）比较不同养殖模式对凡纳滨对虾的生长性能、养殖水体水质影响，探究循环水养殖系统（RAS）的硝化效率变化。结果显示：RAS的凡纳滨对虾存活率（74.58%±1.74%）、饲料转化率（70.56%±3.82%）、产量（3.91±0.49 kg/m3）显著高于IIFA的凡纳滨对虾存活率（66.90%±3.80%）、饲料转化率（67.14%±3.25%）、产量（3.47±0.42 kg/m3）（P<0.05）。对虾RAS可以将养殖水体化学需氧量（COD）、氨氮（NH4+–N）和亚硝酸盐氮（NO2-–N）质量浓度稳定在较低水平（5.92、0.60和1.14 mg/L）；对照组的COD呈现上升趋势，最高升至15.37 mg/L，NH4+–N和NO2-–N质量浓度在较大范围（0.20~2.90 mg/L和0.19~6.97 mg/L）内波动。然而，对虾RAS养殖水体NO3-–N和总氮呈现逐渐上升的趋势，最高分别升至25.98和33.55 mg/L；对照组养殖水体NO3-–N（0.94~2.85 mg/L）和总氮（5.95~14.01 mg/L）质量浓度变化则相对较小。对虾RAS对养殖水体硝化作用发挥着至关重要的作用，NH4+–N和NO2-–N去除率分别为23.78%~91.43%和0~27.76%，硝酸盐氮累积率则稳定在一定范围（0.57%~4.30%）。研究表明，对虾RAS的应用可有效控制凡纳滨对虾养殖水体关键水质指标，有利于存活率的提高和养殖产量的增加。

关键词: 凡纳滨对虾, 循环水养殖系统, 水质, 硝化效率