饲料中脂肪与 花生四烯酸水平对半滑舌鳎(cynoglossus+semilaevis)稚鱼生长、脂肪酸组成与 代谢相关基因表达的影响

《饲料中脂肪与 花生四烯酸水平对半滑舌鳎(cynoglossus+semilaevis)稚鱼生长、脂肪酸组成与 代谢相关基因表达的影响》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、万方数据饲料中脂肪和花生四烯酸水平对半滑舌鳎稚鱼生长、脂肪酸组成及代谢相关基因表达的影响万方数据饲料中脂肪和花生四烯酸水平对半滑舌鳎稚鱼生长、脂肪酸组成及代谢相关基因表达的影响Effectsofdietarylipidandarachidonicacidlevelongrowthperformance，fattyacidcompositionandgenesexpressionofmetabolismrelatedenzymesoflarvalhalf-smoothtonguesole，Cynoglossussemilaevis．AbstractHal

2、f-smoothtonguesole(Cynoglossussemilaevis)isanimportantcommercialflatfishinChina．Twofeedingexperimentswerecarriedoutinanindoorculturesystemtoinvestigatetheeffectsofdietarylipidandarachidonicacidlevelongrowth，activitiesofdigestiveenzymes，fattyacidcompositionandgenesexpressionofmet

3、abolismrelatedenzymesoflarvaltonguesole．Themainresultsaresummarizedasfollows：1．Effectsofdietarylipidlevelsonsurvival，growth，activitiesofdigestiveenzymesandfattyacidcompositionoflarvalhalf-smoothtonguesole(Cynoglossussemilaevis)A30一dayfeedingtrialwasconductedtoinvestigatetheeffec

4、tsofdietarylipidlevelsonsurvival，growth，activitiesofdigestiveenzymesandfattyacidcompositionofhalf-smoothtonguesole(Cynoglossussemilaevis)．Fishoilandphospholipidswereusedasthelipidsources．Fiveisoproteicdietswereformulatedwithgradedlevelsoflipid(6．68％，9．84％，13．47％，17．89％and21．88％d

5、ryweigh0．Eachdietwasrandomlyallocmedtotriplicategroupsof150larvaltonguesole(35DAH，54mg)，andliveprey(LP)wereusedasthecontroldiet．Duringthefeedingexperiment，watertemperaturewaskeptat23MoC，salimtyWas30-a：3％oandlightintensityWasabout7．9WM。2duringdaytimeatthewatersurface．Resultsshowe

6、dthat，thesurvivalrate(SR)oflarvaeincreasedsignificantlywithincreasingdietarylipidfrom6．68％to13．47％andthendecreasedsignificantly,butSRinalltreatmentsweremuchlowerthanthecontr01．Thespecificgrowthrates(SGR)oflarvaefedthedietwith13．47％lipidweresignificantlyhigherthanothertreatmentsa

7、ndthecontr01．Larvaefed13．47％or17．89％dietarylipidshowedhighertrypsin，lipase，leucineaminopeptidase(LAP)andalkalinephosphatase(AP)activitiesthanothertreatmentsandthecontrol，whileX万方数据饲料中脂肪和花生四烯酸水平对半滑舌鳎稚鱼生长、脂肪酸组成及代谢相关基因表达的影响amylaseactivitynearlyshowedreversetrendwiththem．Thefattyaci

8、dcompositionofthetonguesolelarvaeWaswellcorrela