Genetic Parameter Estimation of Semen Traits in Landrace Boars Based on Three BLUP Methods
[Objective]This study was aimed to explore the differences in the estimation result of genetic parameters of semen quality and stability traits of Landrace boars by three BLUP methods.[Method]227 361 semen datas from 2 294 landrace boars were selected for the study.Then the datas were used PBLUP、GBLUP and SSGBLUP for genetic parameter estimation by asreml package.[Result]The result shows that the estimated heritability of PBLUP and SSGBLUP were higher than GBLUP.The heritability results estimated by pblup,gblup and ssgblup methods are as follows:Semen volume(vol)was 0.21,0.08 and 0.20,sperm density(DEN)was 0.17,0.06 and 0.12,sperm motility(MOT)was 0.25,0.06 and 0.26,percentage of abnormal sperm(ABN)was 0.38,0.09 and 0.47,total sperm number(TSN)was 0.11,0.03 and 0.09,and functional sperm number(FSN)was 0.15,0.03 and 0.12.C.V.of semen volume(C.V.VOL)0.11,0.05 and 0.08,C.V.of sperm density(C.V.DEN)0.03,0.02 and 0.03,C.V.of sperm motility(C.V.ABN)0.28,0.02 and 0.12,C.V.of percentage of abnormal sperm(C.V.ABN)0.09,0.01 and 0.03,C.V.of total sperm number(C.V.TSN)0.13,0.02 and 0.12,and C.V.of functional sperm number(C.V.FSN)0.20,0.04 and 0.16.The results of correlation analysis of three BLUP methods showed that the phenotypic correlation and genetic correlation between semen stability traits were positive correla-tion.In terms of semen traits,the estimated results of pblup method are basically consistent with those of ssgblup,which showed a high genetic correction between TSN and FSN(0.98).In conclusion,the herita-bility estimated by pblup and ssgblup methods was higher than that of gblup.The result of correlation showed that the result of PBLUP method was the same as SSGBLUP method,There was a certain correla-tion between semen quality traits(-0.88～0.99),among which,sperm deformity rate was negatively cor-related with sperm motility,total sperm number and effective sperm number(-0.28～-0.88),and it showed a high genetic correction between TSN and FSN(0.98).The phenotypic and genetic correction be-tween any two semen stability traits were positive correlation.[Conclusion]The heritability estimated by pblup and ssgblup methods was higher than that of gblup.Semen traits and semen stability traits were low or medium heritability traits expect ABN was high heritablity traits.
NETL
NSTL
万方数据
维普
