脊尾白虾饲料适宜蛋白和脂肪水平的分析-analysis of suitable protein and fat levels in feed of brachionus carinicauda.docxVIP

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脊尾白虾饲料适宜蛋白和脂肪水平的分析-analysis of suitable protein and fat levels in feed of brachionus carinicauda.docx

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脊尾白虾饲料适宜蛋白和脂肪水平的分析-analysis of suitable protein and fat levels in feed of brachionus carinicauda

AbstractThisstudywasconductedtodeterminetheeffectsofdietaryproteinandlipidlevelsongrowthperformance,bodycomposition,Organizationaldigestiveenzymeactivity,serumnon-specificimmunitiesanddiseaseresistanceofExopalaemoncarinicauda,inordertoprovidingtheoreticalbasisforoptimizingthefeedformularforExopalaemoncarinicauda,whichincludedthreeseries.Series1Effectofdietaryproteinandlipidlevelongrowthperformance,bodycompositionofExopalaemoncarinicauda.Abifactorialmodel(4×3)wasusedtoinvestigatestheeffectofdietaryproteinandlipidongrowthperformance,bodycompositionanddigestiveenzymesactivitiesofExopalaemoncarinicauda.Twelvegroupsofshrimpwiththreereplicatesand50shrimp[averageweight(0.21±0.08)g]perreplicatewerefedtwelveexperimentaldietscontainingfourproteinlevels(35%,39%,43%and47%)andthreelipidlevels(5%,7%and9%)for8weeks.Resultsshowthat:Nointeractionbetweendietaryproteinandlipidexistedforgrowthperformance(P0.05).Weightgain,specificgrowthrate,feedconversionratioandsurvivalrateweresignificantlyinfluencedbybothdietaryprotein(P0.05)andlipidlevels(P0.05).WeightgainofshrimpfedwithP39proteinandF5lipidwassignificantly(P0.05)higherthanthatoftheothergroups.SpecificgrowthrateofshrimpfedwithP47proteinwassignificantlylowerthanthatoftheotherproteingroups(P0.05).FeedconversionrateofP39F5grpupwassignificantlylowerthanthatoftheothergroups.TheP39F5,P39F7andP43F5groupsurvivalratewassignificantlyhigherthanthatoftheothergroups（P0.05）.Proximateanalysisindicatedthatwhole-bodymoistureandproteinwereaffectedsignificantly(P0.05)bydietaryprotein.Whole-bodylipidwasaffectedsignificantly(P0.05)bydietarylipid.TheF7lipidgroupwassignificantlyhigherthanthatoftheotherlipidgroup(P0.05).Whole-bodyashwasnotaffectedsignificantlybybothdietaryprotein(P0.05)andlipidlevels(P0.05).Series2DigestiveandmetabolicresponsesofExopalaemoncarinicaudadietsdifferinginproteinandlipidlevelsTheconceptualdesignofraisingwasthesameasthatofthefirstexperiment.EvaluatetheeffectsofdietaryfatandproteinonDigestiveandHepaticenzymesactivitiesofE.carinicau