The contributions of additive, dominance and imprinting effects to the variance of number of teats (NT) were evaluated in two purebred pig populations using SNP markers. Three different random regression models were evaluated, accounting for the mean and: 1) additive effects (MA), 2) additive and dominance effects (MAD) and 3) additive, dominance and imprinting effects (MADI). Additive heritability estimates were 0.30, 0.28 and 0.27-0.28 in both lines using MA, MAD and MADI, respectively. Dominance heritability ranged from 0.06 to 0.08 using MAD and MADI. Imprinting heritability ranged from 0.01 to 0.02. Dominance effects make an important contribution to the genetic variation of NT in the two lines evaluated. Imprinting effects appeared less important for NT than additive and dominance effects. The SNP random regression model presented and evaluated in this study is a feasible approach to estimate additive, dominance and imprinting variance.
|Publication status||Published - 2014|
|Event||10th World Congress on Genetics Applied to Livestock Production WCGALP 2014, Vancouver, Canada - |
Duration: 17 Aug 2014 → 22 Aug 2014
|Conference||10th World Congress on Genetics Applied to Livestock Production WCGALP 2014, Vancouver, Canada|
|Period||17/08/14 → 22/08/14|