生物絮团系统中不同养殖比例对松浦镜鲤营养及生理指标的影响  

Effect of Songpu mirror carp proportion on nutritional and physiological indexes in biofloc technology system

作　　者：张美彦 杨星 张效平 赵凤 李建光[1] 商宝娣 ZHANG Mei-yan;YANG Xing;ZHANG Xiao-ping;ZHAO Feng;LI Jian-guang;SHANG Bao-di(Fisheries Research Institute Guizhou Academy of Agriculture Sciences,Guiyang 550025,China;Guizhou Special Aquatic Products Engineering Technology Center,Guiyang 550025,China)

机构地区：[1]贵州省农业科学院水产研究所,贵阳550025 [2]贵州省特种水产工程技术中心,贵阳550025

出　　处：《西南农业学报》2022年第5期1228-1232,共5页Southwest China Journal of Agricultural Sciences

基　　金：现代农业产业技术体系国家大宗淡水鱼产业技术体系(nycytx-49-47);贵州省特色水产产业技术体系—养殖功能实验室(GZCYTX2020-01101);贵州省农业科学院青年基金项目[黔农科院青年基金(2018)26号]。

摘　　要：【目的】研究喀斯特山区生物絮团系统中池塘不同养殖比例对主养鱼松浦镜鲤肌肉营养成分、消化酶活性、抗氧化指标及血清生化指标的影响,为生物絮团的生产应用提供理论依据和数据支撑。【方法】在池塘生物絮团系统中设置3种不同养殖比例,即松浦镜鲤与鲢鱼、鳙鱼和草鱼按照80∶20、75∶25、70∶30投放鱼苗,养殖190 d时比较不同养殖比例浦镜鲤的肌肉营养成分、消化酶活性和抗氧化酶活性。【结果】不同养殖比例间松浦镜鲤肌肉成分差异不显著(P>0.05)。前肠和后肠的消化酶活性不同养殖比例间差异不显著,均以75∶25的较高;中肠的消化酶活性中,75∶25的蛋白酶活性显著高于70∶30,与80∶20间差异不显著,其他消化酶活性无显著变化;肝脏抗氧化指标中,丙二醛含量75∶25显著高于70∶30(P<0.05),与80∶20间差异不显著;超氧化物歧化酶活性3个处理间差异不显著,但以75∶25的最高。血清生化指标除75∶25血清白蛋白含量显著高于70∶30和80∶20外(P<0.05),其他指标间差异不显著。【结论】生物絮团系统中,松浦镜鲤与其他鱼类按照75∶25投放时的蛋白酶活性、抗氧化能力、免疫能力高于其他处理。松浦镜鲤与鲢鱼、鳙鱼和草鱼按75∶25的投放比例较适宜松浦镜鲤生长。【Objective】The feeding trial was conducted to study the effect of different aquaculture proportion of Songpu mirror carp on muscle composition,digestive enzyme activity,antioxidant indexes and biochemical indexes in biofloc systems,thereby makes a contribution to theoretical basis and data support for the production and application of biofloc technology.【Method】Songpu mirror carps were cultured with silver carp,bighead carp,grass carp with the ratio of 80∶20,75∶25 and 70∶30,breeding for 190 days in the biofloc system to study the muscle composition,digestive enzyme activity,antioxidant indexes and biochemical indexes.【Result】The muscle composition had no significant difference among 3 groups as P>0.05.Songpu mirror carp group with 75∶25 had higher digestive enzyme activity in foregut and hindgut when there were no significant difference among groups.As for the digestive enzyme activity in midgut,the protease activity of group with 75∶25 was obviously higher than group with 70∶30 as P<0.05,but had litter difference with the group of 80∶20.Among liver antioxidant indexes,the MDA content in group with 75∶25 was significantly higher than group with 70∶30 as P<0.05,but had litter difference with the group of 80∶20.The SOD activity of 75∶25 group was the highest as there were no significant difference among groups.Among serum biochemical indexes,the concentration of ALB in blood of 75∶25 group was significantly(P<0.05)higher than others.【Conclusion】Songpu mirror carp from the group cultured with the ratio of 75∶25 has better protease activity,antioxidant capacity and immunity ability in the biofloc system.It is suitable for the growth of Songpu mirror carps when Songpu mirror carps are cultured with silver carp,bighead carp,grass carp with the ratio of 75∶25.

关 键 词：生物絮团 养殖比例 松浦镜鲤 肌肉成分 抗氧化活性 血清生化指标 消化酶活性 

分 类 号：S969.32[农业科学—水产养殖]