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《凡纳滨对虾与全雄性罗非鱼混养试验.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、南方农业学报JOURNALOFSOUTHERNAGRICULTURE2012.43(10):1590—1594ISSN2095191;CODENNNXAABhttp://www.nfnyxb.comDOI:10.3969/j:issn,2095—1191.20t2.10.1590凡纳滨对虾与全雄性罗非鱼混养试验谢达祥,张彬,陈田聪,陈晓汉+(广西水产研究所,南宁530021)摘要:【目的】探索新的虾鱼混养模式,避免罗非鱼抢食对虾饵料,达到混养防病、高产增效的目的。【方法】根据凡纳滨对虾与全雄性罗非鱼生物学特性及所摄食饵料沉浮性的区别,在混养池塘中设置圈养圈,通过开、闭通
2、道口,投饵引诱罗非鱼进行阶段性圈养,凡纳滨对虾虾苗放养密度67.5万尾/lla,全雄性罗非鱼(规格6.25g/尾)放养密度6000万尾/ha,罗非鱼放养前需对其进行咸化,经118d混养后测定产量,分析养殖效果。【结果】整个养殖过程池塘水质处于相对稳定状态,未发生倒藻现象,也没有发生病害。收获时,凡纳滨对虾平均产量为6212.1kg/ha,全雄性罗非鱼平均产量为3522,7ks/ha,综合投入产出比1:1.52,平均利润75985元/ha。【结论】在池塘中设置圈养圈的虾鱼混养模式是有效可行的。、一关键词:凡纳滨对虾;雄性罗非鱼;混养;圈养圈;养殖效果中图分类号:$964.
3、9文献标志码:A文章编号:2095—1191(2012)10—1590—05Pacificwhiteshrimp(Litopenaeusvannamel3andall-maletilapia(Oreochromisniloticus)polycultureXIEDa-xiang,ZHANGBin,CHENTian-cong,CHENXiao-han+(GuangxiInstituteofFisheries,Nanning530021,China)Abstract:【Objective]Inthisstudy,usingspecificallydesignedcages,
4、thepacificwhiteshrimp(Litopenaeusvannamei)andall—maletilapia(Oreochromisnitoticus)polyeuhurewerestudiedtoavoidcompetitivefeedinginordertopreventdis—ease,increaseproductionyield,andimprovebenefits.【Method】Accordingtothedifferencesinbiologicalcharacteristicsofpacificwhiteshrimpandall—malet
5、ilapiaandtheirbaits’characters,tilapiabaitfeedingwastemporallycontrolledbyopeningandclosingofthewaterpassagestoavoidtilapia’sexcessiveconsumptionofpacificwhiteshrimp.Thestudywasconductedintwo6.67hapondsbymixing67.5x104post—larvae/hapacificshrimpsand6.0×107fingerlings/haall—maletilapias.T
6、hevieldwasdeterminedbyanalyzingtheculturingeffectsafter18days.【Result1Duringthepolycuhuringprocess,nodiseasesweredetectedforpacificwhiteshrimpandall—maletilapiaunderrelativestablewaterquality.Af-ler118days,theyieldofshrimpandtilapiaaveraged6212.1and3522.7kg,ha,respectively;thecomprehensi
7、veratioofinputtooutputwas1:1.52andtheaveragebenefitwas75985Yuardha.【Conclusion]ItisfeasibletoapplymixedculturingofDacificwhiteshrimpandall—maletilapiainthesamepondwiththeappropriateconfinementmethed.Keywords:pacificwhiteshi:imp(Litopenaeusvannamei);all—maletilapia(Oreoehr
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