波尔山羊部分生产性状的遗传分析

1,1,2,2,3,4(11,210095;21,225009;31,221151;41,210003):16834512,1225612120115,0143,01390135120132,01450146;-0134,-0136-01411201590162;016401721201680178,,12:;;;:S81418:A:1000O2030(2002)01O0077O03EstimationofgeneticparametersofproductiontraitsinBoergoatLIUGui2qiong1,YANGLi2guo1,JIANGXun2ping2,DINGJia2tong2,ZHAOWen2kui3,SHENWei2min4(1CollegeofAnimalScienceandTechnology,NanjingAgricUniv,Nanjing210095,China;2CollegeofAnimalScienceandVeterinaryMedicine,YangzhouUniv,Yangzhou225009,China;3XuzhouBreedingCenterofBoarGoats,Xuzhou221151,China;4JiangsuNinghuaAgricultureandTradeLimitedCorporation,Nanjing210003,China)Abstract:Majorgeneindexofproductivetraitswascalculatedwiththedataof168Boergoatsandtheir345descendents.Geneticanalysiswasconductedonthedataoflittersize,birthweight,one2monthweightandtwo2monthweightof256descendentsfrom12bucksinBoergoat.Theheritabilityoflittersize,birthweight,one2monthweightandtwo2monthweightofkidswere0115,0143,0139and0135,re2spectively.Thephenotypiccorrelationsbetweenlittersizeandbirthweight,one2monthweight,two2monthweightofkidswere0132,0145and0146,andthegeneticcorrelationsbetweenthemwere-0134,-0136and-0141,respectively.Thephenotypiccorrelationsbetweenbirthweight,one2monthweightandtwo2monthweightofkidswere0159and0162,andthegeneticcorrelationsbetweenthemwere0164and0172,respectively.Thephenotypicandgeneticcorrelationsbetweenone2monthweightandtwo2monthweightofkidswere0168and0178.Themajorgeneindexanalysisindicatedthatone2monthweightandtwo2monthweightofkidswereinfluencedbymajorgenewhilebirthweightofkidswerenotinfluencedbymajorgene.Keywords:Boergoat;productiontraits;geneticparameter;majorgeneindex,,,19951000,,,,,,160%180%,180%200%,3,,:2001O09O03:(BJ990040,BG98501211):(1970),,,Tel:025O43953062002,25(1):7779JournalofNanjingAgriculturalUniversity,111119982001168345(12),1012256112,12,3,3(35)(68)(911)(122)SASMEANS,GLM[1]HAR2VEY[24],:Yijk=+Si+Fj+Pk+eijk,Yijk;;Sii,i=1,2,,12;Fjj;Pkk;eijk113(MGI)[7]:,;,:MGI(k)=E(|F1-(P1+P2)/2|k)/E(|F1-P1|k/2|F1-P2|k/2),F1P1P2,k,k0,MGI(k)1;,k0,MGI(k)1Karlink=015,1,2MGI(k),MGI(k)1,1,1,MGI(k)k;,MGI(k):(1)MGI(k);(2)kMGI(k);(3)MGI(k)kFamulaMGI(k),MGI(k)11022111,(P0105),,1Table1MeansandstandarddeviationsofproductiontraitsinBoergoatLitterLittersize/kgBirthweight1/kg12monthweight2/kg22monthweightParity110511670103b3131017861791112131181136b26511940176a3115019261631193131892122b38621060103a3112017361901124141742185aLambingseasonSpring551182014221840165b61321105b121851192bSummer921187013631380161a61861125a141162100aAutumn221184015121900159b61381196b121902117bWinter871191011331340144a61821173a141542131a:(P0105)Valuesinthesamevolumewithdifferentsuperscriptdiffersignificantly.1(P0105),32(P0105)(P0105),,12(P0105),,,;,,8725,12,12212,,12(2)12,12(P0101)2133,MGI1,k,,12MGI,kMGIMGIk2Table2Theheritability(h2),phenotypic(rP)andgeneticcorrelation(rA)ofsomeproductiontraitsinBoergoatLittersizeBirthwt.112monthwt.222monthwt.Littersize0115-01343-01363-014133Birthwt.01323014301643017233112monthwt.0145301593013901783222monthwt.01463016230168330135:(h2);(rA);(rP)Note:Valueson,aboveandbelowthediagonallinerepresentheri2tability(h2);geneticcorrelation(rA)andphenotypiccorrelation(rP).,,3123kTable3Majorgeneindexesofbirthweight,12and22monthweightsat3levelsofkvaluesinBoergoatsTraitsP1P2F1k=015k=110k=210Birthweight314201732196015431210151013601130102112monthweight810511367115017781921146110311061113222monthweight131951199121051186141681173111011211147312,,,,,,2,,,,,,,,,,,,,QTL,(:,,,):[1],,,.SAS[M]1:,1995.11821211[2],,11[M]1:,19931562591[3]FalconerDS,MackayTFC.IntroductiontoQuantitativeGenetics.4thed.Essex:LongmanGroupLimited,1996.31323171[4],,1[J]1,1998,21(1):77281.[5],,,1[J]1,2001,24(1):692721[6]FamulaTR.Identifyingsinglegenesoflargeeffectinquantitativetraitsusingbestlinearunbiasedprediction[J].JAnimSci,1986,63:68276.[7]KarlinS,WilliamsPT,CarmelliD.Structuredexploratorydataanalysis(SEDA)fordeterminingmodeofinheritanceofquantitativetraits.I.Simulationstudiesontheeffectofbackgrounddistributions[J].AmJHumGenet,1981,33(2):2622281.:971: