褪黑激素影响山羊绒生长分子机理-动物遗传育种与繁殖专业论文.docx

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2018-05-05 发布于上海
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褪黑激素影响山羊绒生长分子机理-动物遗传育种与繁殖专业论文.docx

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褪黑激素影响山羊绒生长分子机理-动物遗传育种与繁殖专业论文

TheMolecularMechanism ofMelatonin AffecttingtheGrowthofCashmereAbstractThepaperstudiestheimplantingmelatonin(MT)ofCashmeregoatsinInner Mongolia.Thechangesinproductioncharactersandtheexpressionlevelofgrowthrelated geneinskinwerestudiedforthreetreatments:implantedMTfortwoconsecutiveyears, implantingMTfor1yearandstoppedimplantMT.Theanalysisresultscouldprovide referencesandbasisforthemolecularmechanismofCashmere growthresearch,and establishthetheoreticalfoundationfortheactualproductionpracticeofMT.Tostudythe effectofMTontheCashmeregrowthtraitsandthequalityofCashmere,diameterand lengthofCashmereandwoolweremeasuredmonthly;atthesametime,studyonthe influenceofimplantingMTontheexpressionlevelofgrowthrelatedgeneinskinusing theRT-PCR andin-situhybridizationtechniques.Those results suggestedthat:TheimplantingMTshortenedthetimeofCashmeregrowthcycle.Startingtoimplant MTfromJuly,theCashmeregoatsdepilatedCashmeretwiceinoneyear,andfourtimes duringtwoyearsafterimplantingMTanotheryear.StoppedimplantingMTafterthefirst oneyear,theCashmeregoats depilatedCashmerethreetimes duringtwoyears anddelayed depilationinnextspring.AlthoughthedepilatedCashmereinautumnwasshorterthanin spring,thelengthofCashmerecanmeettherequirementofproduction.ImplantingMTor stoppedimplantinghadnoeffectonCashmerethickness,lengthanddiameterofmature goatsinspring;implantingMTfortwoconsecutiveyearstolambcandecreasethe Cashmerediameter.Stoppedimplantingafteroneyeartreatmentforlambmadethe Cashmerelengthgettingshorter.ImplantingMThadnoeffectonwoollengthandgrowth cycle,butdecreasedthetendencyofwooldiameterforoneyearoldCashmeregoatin implantingyear.Theproportionofcashmereandwoolhadbeensignificantlydeclinedby consecutiveimplantingMTfortwoyearsinlamb,hadbeenimprovedbyimplantingMTin maturegoat.TheCashmerefieldimprovedinthefirstyearofimplantingMT,and decreasedinthenextyearafterimplantingMTfortwoconsecutiveyears;theCashmere fieldhad similartrendtocontrolgroupafterstoppingimplantingMTforCashmeregoat.RT-PCRresultsshowed:Inthemature