CAJ | 학술논문

对二花脸猪、大白猪及其杂交一代和回交一代4个群体共计2 01 0窝产仔数的资料进行了加性—显性遗传模型以及基因效应的研究。方差分析结果显示，窝产仔数(总产仔数和活产仔数)具有极显著的群体间差异，表明不同群体的遗传结构不同。多元回归结果表明：加性效应平方和占总产仔数和活产仔数总遗传变异平方和的比例分别为75 .4% 和69.8%，可见加性效应是群体间遗传变异的主导因素。显性效应平方和占总产仔数和活产仔数总遗传变异平方和的比例分别为18.3%和23.7%，表明显性效应在群体间遗传变异中是相当重要的。上位效应平方和占总产仔数和活产仔数总遗传变异平方和的比例分别为6.3% 和6.5%，可见上位效应对窝产仔数群体间遗传差异作用不大。猪总产仔数和活产仔数的群体平均值分别为13.01和12.42，二花脸猪总产仔数和活产仔数基因加性值比大白猪分别高 2.77和2.49头，二花脸猪高的总产仔数和活产仔数基因对大白猪等位基因均为显性，显性度分别为0.91和0.97。适合性检验结果表明，窝产仔数符合加性—显性遗传模式。
대이화검저、대백저급기잡교일대화회교일대4개군체공계2 01 0와산자수적자료진행료가성—현성유전모형이급기인효응적연구。방차분석결과현시，와산자수(총산자수화활산자수)구유겁현저적군체간차이，표명불동군체적유전결구불동。다원회귀결과표명：가성효응평방화점총산자수화활산자수총유전변이평방화적비례분별위75 .4% 화69.8%，가견가성효응시군체간유전변이적주도인소。현성효응평방화점총산자수화활산자수총유전변이평방화적비례분별위18.3%화23.7%，표명현성효응재군체간유전변이중시상당중요적。상위효응평방화점총산자수화활산자수총유전변이평방화적비례분별위6.3% 화6.5%，가견상위효응대와산자수군체간유전차이작용불대。저총산자수화활산자수적군체평균치분별위13.01화12.42，이화검저총산자수화활산자수기인가성치비대백저분별고 2.77화2.49두，이화검저고적총산자수화활산자수기인대대백저등위기인균위현성，현성도분별위0.91화0.97。괄합성검험결과표명，와산자수부합가성—현성유전모식。
Study on additive-dominant genetic model and gene effects was conducted on the data of 4 populations with 2 010 litters including Erhualian pigs(P1),Large White(P2),first cross(F1)and backcross(B2).The results of variance analysis indicated that litter size had extremely significant difference between populations,which showed that various populations had different genetic structure.The results of the multiple regression procedure showed th at additive component accounted for 75.4% for the total number born,and 69.8% for the number born alive,which showed that additive effect played a leading role in the genetic variation between populations.Dominant component accounted for 18.3% for the total number born,and 23.7% for the number born alive,which showed that dominant effect was considerably important in the genetic variation between populations.Epistatic component accounted for 6.3% for the total number born,and 6.5% for the number born alive,which showed that epistatic effect was not important in the genetic variation between populations.The population means for the total number born and the number born alive were 13.01 and 12.42，respect ively.The additive effects of the genes on the total number born and the number born alive in Erhualian pigs were 2.77 and 2.49 higher than the corresponding allele in Large White.The genes on the total number born and the number born alive in Erhualian pigs were dominant to the corresponding allele in Large White with the degree of dominance of 0.91 and 0.97.The results of fitness test indica ted that additive-dominant genetic model was adequate for litter size.