Genomic evaluation by including dominance effects and inbreeding depression for purebred and crossbred performance with an application in pigs

Table 1 Variance components of additive and dominance genetic effects for purebred and crossbred animals

Scenario	Breed	\(\sigma_{AP}^{2}\)	\(\sigma_{AP,AC}\)	\(\sigma_{AC}^{2}\)	\(\sigma_{D}^{2}\)	\(\sigma_{e}^{2}\)	\(\sigma_{{AC_{LY} }}^{2}\)	\(\sigma_{{D_{LY} }}^{2}\)	\(\sigma_{{e_{LY} }}^{2}\)
Nogen	L	0.99 (0.31)	0.17 (0.07)	0.05 (0.02)	–	10.82 (0.43)	0.05 (0.02)	–	7.35 (0.15)
Nogen	Y	1.07 (0.33)	0.15 (0.07)	0.05 (0.02)	–	8.96 (0.38)	0.05 (0.02)	–	7.35 (0.15)
Gen_AM	L	0.87 (0.22)	0.47 (0.10)	0.28 (0.07)	–	10.89 (0.38)	0.28 (0.07)	–	7.11 (0.15)
Gen_AM	Y	0.55 (0.20)	0.17 (0.10)	0.28 (0.07)	–	9.42 (0.33)	0.28 (0.07)	–	7.11 (0.15)
Gen_ADM	L	0.86 (0.21)	0.46 (0.10)	0.28 (0.06)	0.04 (0.03)	10.86 (0.38)	0.28 (0.06)	0.02 (0.01)	7.11 (0.15)
Gen_ADM	Y	0.54 (0.18)	0.17 (0.09)	0.28 (0.06)	0.06 (0.05)	9.35 (0.33)	0.28 (0.06)	0.02 (0.01)	7.11 (0.15)

Numbers in brackets are the standard errors of the corresponding parameters
\(\sigma_{AP}^{2}\) is the additive genetic variance for purebred performance; \(\sigma_{AP,AC}\) is the additive genetic covariance between purebred and crossbred performance; \(\sigma_{AC}^{2}\) is the additive genetic variance for crossbred performance; \(\sigma_{D}^{2}\) is the dominance genetic variance for either purebred animals; \(\sigma_{e}^{2}\) is the residual variance for purebred animals; \(\sigma_{{AC_{LY} }}^{2}\) is the additive genetic variance for the F1 crossbred animals LY; \(\sigma_{{D_{LY} }}^{2}\) is the dominance genetic variance for the F1 crossbred animals LY; and \(\sigma_{{e_{LY} }}^{2}\) is the residual variance for the F1 crossbred animals LY
L Landrace, Y Yorkshire breeds

ISSN: 1297-9686