大豆生物活性肽（SBP）對蛋雞脂類代謝與蛋黃著色的調(diào)控機(jī)理研究.pdf

1、Y774857分類號：密紱：單位代碼：10019學(xué)號：S02269’j目巖≮夭等碩士學(xué)位論文大豆生物活性肽(SBP)對蛋雞脂類代謝與蛋黃著色的調(diào)控機(jī)理研究ModulatingMechanismofSoybeanBioactivePeptides(SBP)onCholesterolMetabolismandYolkPigmentationinLayingHens研究生：指導(dǎo)教師：申請學(xué)位門類級別：專業(yè)名稱：研究方向：所在學(xué)院：張功張日俊副

2、教授農(nóng)學(xué)碩士動物營養(yǎng)與飼料科學(xué)飼料生物技術(shù)動物科學(xué)技術(shù)學(xué)院二oo五年六月AbstractThisstu衄focusedontheeffectsofsoybeanbioactivepeptides(SBP)onproductiveDeIf‘)manceyolkcholesterolandyolkcolorinlayinghensFurthermore，themechanismofthiseffectswasinvestigatedonas

3、pectsofmetabelismsofbileacidsandcholester01Experimentl：StudyontheemulsilyingpropertiesofSBPIncontrastwithsoyproteinisolate，theemulsificationofsoybeanpeptideswasincreasedgreatlyThetopeemulsifyinscapacitywasobservedwhenhyd

4、rolysisdegree／DH)valuereached10％withtheenzymaticmodificationbyBsubtilisExperiment2：EffectsofSBPonproductionperformance＆yulkquailtyofhens1)378Lohmannlayinghensof296olddaywererandomlyallottedinto6groupsand63pergroupsThe6gr

5、oupsadoptedanentirelyrandomexperimentdesignationoftwofactors(2x3)dietaryoillevelswere0andiog／kg，dietarySBPlevelswere0，120mg／kgand180mg／kg2)78Lohmannlayinghensof296olddaywererandomlyallottedinto6groupsand63pergroups。The6g

6、roupsadoptedanentirelyrandomexperimentdesignmionoftwofactors(2x3)dietaryoillevelswere0and109／kg，DHofSBPwere0，DH=10％andDH=20％Theresultswereasfollows：SupplementationofSBPdecreasedeggcholesteroleffectively(PO01)Layinghensfe

7、ddietssupplementedwithSBPandsoyoilpresentedbettervaluesofRCF(PO01)thanwithSBPorsoyoilRedvalueincreasedquickly(P001)andLightvaluewasdecreasedbyalllevelsofpeptidessupplementation(P001)ButyellowvalueWasnotmodifiedExperiment

8、3：MechanismofthecholesterollowingaetivityandyolkcolorincreasingeffectsofSBPinlayinghensInexperiment2，conductedtotesttheinfluenceofSBPonmechanismofbileandcholesterolinlayinghensTheresultswereasfollows：1)normallySBPcarldec

9、reasethelevelofbloodlipidinlayinghensslightlyButwhenthelevelofbloodlipidWAShi曲erthannormallevel，SBPCalldecreasedthelipidcontentofbloodsignificantly(P001)ThelipidcontentofblooddecreasedlinearlywiththeamountsofSBPinthediet

10、s120mg／kgSBPsignificantlyincreasedthelevelofthyroxine(P005)andexcretionofbothfecalbileacidsandfecalneutralcholesterol(PO05)2)ItispossibleThatSBPdecreasedyolkcholesterolbyincreasingexcretionofbothfecalbileacidsandfecalneu