循环水高密度养殖珍珠龙胆石斑鱼效果研究  

High density culture of the hybrid grouper epinephelus fuscoguttatus(♀) × epinephelus lanceolatus(♂) in recirculating aquaculture system

作　　者：杨超[1] 孙建明 徐哲 吴斌 吴垠[1] YANG Chao;XU Zhe;WU Bin;WU Yin;SUN JianMing(Dalian Ocean University, Dalian 116023 , China;Dalian Hui Xin Titanium Equipment Development Co. Ltd. , Dalian 116039, China)

机构地区：[1]大连海洋大学水产与生命学院 ，辽宁 大连 116023 [2]大连汇新钛设备开发有限公司 ，辽宁 大连 116039

出　　处：《渔业现代化》2016年第3期18-22,共5页Fishery Modernization

基　　金：农业科技成果转化资金项目(2012GB2B000086);国家级星火计划项目(2012GA651003)

摘　　要：为研究循环水高密度养殖珍珠龙胆石斑鱼[Epinephelus lanceolatu(?)XEpinephelus fuscoguttatus(?)]的养殖效果，在自行研制的循环水养殖系统中进行了试验。试验中对珍珠龙胆石斑鱼生长指标及养殖系统主要水质指标进行分析测定。结果显示，养殖期间的水质指标：水温26~29丈，盐度25~30,溶氧(DO)&8mg/L,氣氮浓度0.20~1.16mg/L,亚硝酸盐氮0.05~0.40mg/L。试验共持续250d,分3个生长阶段：第1阶段87d,密度由13.82kg/m3增加到28.89kg/m3，存活率95.28%，平均体重由（150±18)g增加到（329±42^，特定生长率（5^/〇为（0.90±0.06)%;第2阶段106(1，密度由28.891^1113增加到53.361^1113,存活率90.44%，平均体重由（329±42)g增加到（672±66)g，SGfl为（0.67±0.02)%;第3阶段57d,密度由46.98kg/m3增加到69.50kg/m3,存活率98.6%，平均体重由（676±52)g增加到（1014±75)g，SGfl为(0.71±0.02)%。养殖期间的平均SGfl为（0.76±0.02)%，总存活率84.9%，饲料系数1.04,投入产出比为1:2.02。本研究成果可为高密度养殖珍珠龙胆石斑鱼提供参考。A feeding trial was designed to study the fish farming system-high density recirculating aquaculture system (HD-RAS) and developed to achieve extreme high densities of fish culture in a designated area and controlled environment. The study used the hybrid grouper-Epinephelus fuscoguttatus ( ? ) X Epinephelus lanceolatus ( cf ) as an experimental fish model to test the performance of the high density recirculating aquaculture system, and analyzed the growth dynamics of the groupers in the HD-RAS. In the experiment,growth indexes and main water quality indicators were analyzed to determine farming system. The temperature of water in the HD-RAS was between 26 °C to 29 °C , the salinity was 25 %〇 to 30 %〇, and the DO was equal to or greater than 8 mg/ L. The concentrations of ammoniacal nitrogen and nitrite were 0. 20 to 1. 16 mg/L and 0.05 to 0. 40 mg/L respectively. The whole test lasted for 250 days and was divided into three successive stages. Phase 1 (Day 1 to 87) , the density of grouper culture increased from 13. 82 kg/m3 to 28. 89 kg/m3, the survival rate was 95.28% , the average weight increased from (150 ±18) g to (329 ±42) g, and the SGi? was 0? 90 ± 0? 06. Phase 2 (the following 106 days after Phase 1 ) , the culture density increased from28. 89 kg/m3 to 53. 36 kg/m3, the survival rate was 90.44% , the average weight increased from (329 ±42) gto (672 ± 6 6 ) g, and the SGi? was 0? 67 ±0. 02. Phase 3 (the last 57 days) , the culture density continued toincrease from 46. 98 kg/m3 to 69. 50 kg/m3, the survival rate was 98. 6 % , the average weight increased from(676 ±52) g to (1 014 ±75) g, and the SGi? was 0.71 ±0.02. In the whole 250-day cultivation period theaverage SGi? was 0.76 ± 0 . 0 2 , the total survival rate was 84.9% , the average feed conversion ratiowas 1.04 and economical input/output ratio was 1 ? 2. 02. In summary, the study provided strong evidences for the possibility to culturing E. fuscoguttatus ( ? ) X lanceolatu ( cf ) at large scale and extremely high density using the

关 键 词：珍珠龙胆石斑鱼 高密度 循环水养殖系统 水质指标 特定生长率 

分 类 号：S959[农业科学—水产养殖]