1、湖南農(nóng)業(yè)大學(xué)碩士學(xué)位論文用MTDFREML對(duì)杜洛克豬生產(chǎn)性狀的遺傳分析姓名：蔣亞梅申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：動(dòng)物遺傳育種與繁殖指導(dǎo)教師：張?jiān)S2003.5.1ABSTRACTRecordson765Durocforrepoduction缸aitsandproductiontraitsmadebetween1997and2001indurocnucleusherdinTianxinSwineBreedingCenterwereusedtoe

2、stimateadditivegenetic(animal)，matermalgeneticmatermalpermanentenvironmental，commonliteerandresidualvarianceandcocarianceGeneticparameterswereestimatedusingMTDFREMLappliedtoamultivariateindividualanimalmedelwithfixedeffe

3、ctsofherdyearseasonparityorherdy’earseasonsexandrandomeffectsofanimal(additivedirectgenetic)，additivematernalgeneticmaternalpermanentenviromental，conmlolllitterandresidualThegenetictrendsofthemaineconomictraitswereanalyz

4、edThestudiedmaineconomictraitsincludednumberofpigletsbom1lve(NBA)，litterweightbom(LBW)numberofpi91etsat21d(S21)litterwrightat21d(LW21)litterweightatweaning(LW30)，numberofpigletsatweaning(S30)weightof60d0N60)，weightof120d

5、Wl20)，bodylengthof120d(BLl20)，chestginhof120d(CGl20)，adominalgirthof120d(AGl20)hipgirthof120d(HGl20)circumferenceoflegof120d(CLl20)withersheightof120d(WHl20)，weightof180d(W180)，bedylengthof180dOBLl80)，chestgirthof180d(CG

6、l90)，edominalsirthof180d(AGl80)，hipgirthof180d(HGl80)circumferenceoflegof180d(CLl80)withersheightof180d(WHl80)，averagedailygaln(ADG)，backfatdepthadjustedto180d(BF)HedtabilitiesforNBALBW$21，Lw2l，LW30，$30，W60，W120，BLl20，CG

7、l20，HGl20，CLl20，WHl20，W180，BLl80，CGl80，HGl80，CLl90WHl80ADGandBFwere012，012，021，011010016，011057043，012，030071，023，052，053，080，005，047，033，034，03l，respectivelyAdditivematernalgeneticeffectswereO01，002005，002，000andO03forN

8、BA，LBW$21，LW21，Lw30，S30；correlationbetweenadditivedirectgeneticandadditivematernalgeneticeffectwere034，049083，1000II，100，respevtivelymaternalpermanentenvironmentaleffectswere00697，01067，0005700353，00189，00105；Commonlitte

9、renvironmenteffectswere030103034x104025x103，023x103，010x10“7，012x10“200212，01480，00533，02055，00528015670075，00258，02755，00520，00290，00468，00514，0013100608forNB^LBW$21，LW21，LW30，$30，W60，W120，BLl20，CGl20HGl20CLl20WHl20W180