南方农业学报2025，Vol.56Issue(3)：944-952,9.DOI:10.3969/j.issn.2095-1191.2025.03.024
杜洛克猪精子动力学参数非遗传因素分析与遗传参数估计
Non-genetic factors analysis and genetic parameter estimation of sperm motility parameters in Duroc pigs
摘要
Abstract
[Objective]The non-genetic factors analysis and genetic parameters estimation of sperm motility para-meters of Duroc pigs were carried out to provide reference for improving semen quality of Duroc boars and breeding level of sows.[Method]A total of 178706 sperm motility parameters[sperm concentration(SC),sperm straight-line motility rate(SLMR),curvilinear distance(DCL),average path velocity(VAP),curvilinear velocity(VCL)and straight-line velocity(VSL)]were collected from 570 Duroc boars from 2016 to 2023.The analysis of fixed effect variance,statisti-cal analysis,non-genetic factor analysis,estimated variance component analysis,genetic correlation analysis and pheno-typic correlation analysis were performed for different motility parameters of Duroc porcine sperm.[Result]The kinetic parameters of sperm were extremely significantly affected by month of age at sperm collection,year of birth,birth parity,year of sperm collection,litter size and season of sperm collection(P<0.001).The variation coefficient of SLMR was the smallest,6.20%,and its average was 91.49%.The variation coefficient of SC was the maximum,being 51.99%.The DCL,VAP,VCL and VSL of Duroc boars of>24 months of age were significantly higher than those of other Duroc boars of other months of age(P<0.05,the same below),and the SC of Duroc boars born in 2022 and 2021 was signifi-cantly higher than that of other birth years.The SLMR,DCL,VAP,VCL and VSL of Duroc boars at 3 to 4 parities were significantly higher than those of other parities.The SC,SLMR,DCL,VAP,VCL and VSL of Duroc boars with>16 lit-ter size were significantly higher than those of other litter sizes.SLMR,DCL,VAP,VCL and VSL of Duroc boars were significantly higher in winter than in other seasons,and significantly lower in summer.The heritability of each motility pa-rameter of Duroc boar sperm ranged from 0.040 to 0.240.The repetition force was 0.26-0.38.The heritability of SC and SLMR was<0.100,belonging to low heritability trait,and the repeatability of VAP and VSL was higher,being 0.33 and 0.38 respectively.The genetic correlation coefficients between SLMR and DCL,VAP,VCL and VSL were 0.38,0.51,0.41 and 0.41 respectively.Phenotypic correlation coefficients were 0.29,0.30,0.25 and 0.26 respectively.The reliability of the estimated breeding values of SC,SLMR,DCL,VAP,VCL and VSL of Duroc boar sperm were 0.79,0.59,0.73,0.80,0.75 and 0.82 respectively,and the reliability of each motility parameter was high.[Conclusion]Sperm motility pa-rameters are significantly affected by month of age at sperm collection,year of birth,birth parity,year of sperm collec-tion,litter size and season of sperm collection.Sperm concentration and sperm straight-line motility rate are low herita-bility traits,and sperm straight-line motility rate,curvilinear distance,average path velocity,curvilinear velocity and straight-line velocity have high genetic correlation.关键词
杜洛克/精子动力学参数/非遗传因素分析/遗传参数/遗传相关Key words
Duroc/sperm kinetic parameters/analysis of non-genetic factors/genetic parameters/genetic correla-tion分类
农业科技引用本文复制引用
周隽,司景磊,孙如水,张海燕,钱昱良,张浩,辜祥涛,曹玉美,韦富康,林昌华..杜洛克猪精子动力学参数非遗传因素分析与遗传参数估计[J].南方农业学报,2025,56(3):944-952,9.基金项目
广西揭榜制科技项目(桂科JB23023003) （桂科JB23023003）
广西农垦永新畜牧集团有限公司科技项目(永新牧科2023001,永新牧科2023003,桂垦牧科2022003) Guangxi Science and Technology Project under the List-releasing System(Guike JB23023003) （永新牧科2023001,永新牧科2023003,桂垦牧科2022003）
Science and Technology Project of Guangxi State Farms Yongxin Animal Husbandry Group Co.,Ltd.(Yongxinmuke 2023001,Yongxinmuke 2023003,Guikenmuke 2022003) （Yongxinmuke 2023001,Yongxinmuke 2023003,Guikenmuke 2022003）
