Genetic parameter estimation for number born alive at different parities in Landrace and Large White pigs
Genetic parameter estimation for number born alive at different parities in Landrace and Large White pigs
复制标题
DOI：
10.1111/asj.13252
复制
发表时间：
2019-07-03
影响因子：
2
通讯作者：
Satoh, Masahiro
中科院分区：
文献类型：
--
作者：
Ogawa, Shinichiro;Konta, Ayane;Satoh, Masahiro
我们使用三个模型估计了长白猪和大白猪从第一胎到第七胎的活产仔数(NBA)的遗传参数。分析了12,677只长白母猪和10,405只大白母猪的55,160只分娩记录，用单性状动物模型估计了每个胎次的NBA遗传力，用双性状动物模型和单性状随机回归模型估计了胎次之间的遗传相关性。每个胎次的NBA遗传力估计长白在0.08到0.13之间，大白在0.05到0.16之间。所有病例中，胎次之间的估计遗传相关性都是正的。第一胎和第二胎之间的遗传相关略低于其他相邻胎之间的遗传相关。在某些情况下，较远的胎次之间的遗传相关性往往较低。
We estimated genetic parameters for number born alive (NBA) from the first to the seventh parities in Landrace and Large White pigs using three models. Analyzing 55,160 farrowing records for 12,677 Landrace dams and 43,839 for 10,405 Large White dams, we used a single-trait animal model to estimate the heritability of NBA at each parity and a two-trait animal model and a single-trait random regression model to estimate the genetic correlations between parities. Heritability estimates of NBA at each parity ranged from 0.08 to 0.13 for Landrace and from 0.05 to 0.16 for Large White. Estimated genetic correlations between parities in all cases were positive. Genetic correlations between the first and second parities were slightly lower than those between other neighboring parities. Genetic correlations between more distant parities tended to be lower, in some cases