渔业现代化2025，Vol.52Issue(5)：44-53,10.DOI:10.26958/j.cnki.1007-9580.2025.05.005
双色鳗鲡工厂化节水减排养殖工艺优化及应用
Optimisation and application of the water saving and effluents reduction for industrial aquaculture of Anguilla bicolor
摘要
Abstract
In order to solve the problems of large amount of water drainage,deterioration of water quality in the late stage of eel culture,and high investment and operation cost of equipment and facilities,this study optimized a water-saving and emission-reducing aquaculture process for eel and applied it in practical scenarios.An orthogonal experimental design was employed to develop an in-situ water treatment technology using"bacterial granules-composite bacterial liquid agents"based on three selected functional strains with nitrogen and phosphorus removal capabilities.The optimized industrialized water-saving and emission-reducing aquaculture process was then demonstrated through controlled experiments at different stocking densities for fingerling eel over a 120-day culture period.The results showed that in Treatment Group Ⅰ(500 ind./m3),the harvest size,yield,specific growth rate,and absolute weight gain rate of the fry were significantly higher than those of the control group by 41.4％,43.9％,17.3％,and 48.2％,respectively(P＜0.05),while the feed conversion ratio was significantly lower by 17.6％(P＜0.01).In Treatment Group Ⅱ(750 ind./m3),the harvest size,yield,specific growth rate,and absolute weight gain rate were significantly higher than the control group by 20.5％,83.0％,8.9％,and 23.3％,respectively(P＜0.05),with the feed conversion ratio significantly lower by 11.0％(P＜0.01).Both treatment groups achieved over 75％water savings and emission reductions compared to the control.In Treatment Group Ⅰ,the average concentrations of ammonia nitrogen,nitrite nitrogen,nitrate nitrogen,total nitrogen,and total phosphorus in the water were significantly lower than those in the control group by 90.8％,80.7％,10.0％,51.5％,and 38.7％,respectively(P＜0.05).In Treatment Group Ⅱ,these concentrations were significantly lower by 88.0％,74.2％,5.6％,42.6％,and 21.3％,respectively(P＜0.05).These findings indicate that this aquaculture process offers advantages such as water conservation,emission reduction,sustained high water quality,and low investment and operational costs,suggesting broad application prospects.关键词
双色鳗鲡/脱氮降磷/功能菌/固定化微生物/循环水养殖Key words
Anguilla bicolor/nitrogen and phosphorus reduction/functional bacteria/immobilized microorganisms/Recirculating Aquaculture System(RAS)分类
农业科技引用本文复制引用
张明明,江兴龙,杨若兰,卓依诺..双色鳗鲡工厂化节水减排养殖工艺优化及应用[J].渔业现代化,2025,52(5):44-53,10.基金项目
福建省科技厅重大专项专题项目(2024YZ037016) （2024YZ037016）
国家重点研发计划(2020YFD0900102) （2020YFD0900102）
鳗鲡现代产业技术教育部工程研究中心开放基金(RE202201) （RE202201）
