Impacts of additive, dominance, and inbreeding depression effects on genomic evaluation by combining two SNP chips in Canadian Yorkshire pigs bred in China

Table 4 Estimates of the heritabilities and inbreeding depression (\(\eta\)) and their standard error (SE) for each trait and each genomic model

Trait	Model	\({\mathrm{h}}_{a}^{2}(\mathrm{SE})\)	\({{\mathrm{h}}_{d}^{2}(\mathrm{SE})\|\mathrm{h}}_{{d}^{*}}^{2}(\mathrm{SE})\)	\(\eta (\mathrm{SE})\)	\(\eta /{\upsigma }_{p}\)
ADG	MA	0.258 (0.018)
	MAD	0.255 (0.018)	0.01 (0.011)
	MAD*	0.258 (0.018)	0.008 (0.008)
	MAI	0.262 (0.018)		− 229.58 (46.688)	− 4.023
	MAID	0.26 (0.018)	0.005 (0.011)	− 231.88 (48.422)	− 4.063
	MAID*	0.261 (0.018)	0.004 (0.008)	− 231.984 (48.59)	− 4.065
BF	MA	0.373 (0.019)
	MAD	0.365 (0.019)	0.018 (0.011)
	MAD*	0.37 (0.018)	0.014 (0.008)
	MAI	0.374 (0.019)		− 4.749(2.195)	− 1.702
	MAID	0.366 (0.019)	0.017 (0.011)	− 4.899 (2.107)	− 1.756
	MAID*	0.371 (0.018)	0.013 (0.008)	− 4.992(2.046)	− 1.789
LMD	MA	0.249 (0.018)
	MAD	0.243 (0.018)	0.012 (0.012)
	MAD*	0.248 (0.018)	0.009 (0.009)
	MAI	0.248 (0.018)		− 11.604 (3.78)	− 2.516
	MAID	0.243 (0.018)	0.011 (0.012)	− 11.696 (4.086)	− 2.536
	MAID*	0.246 (0.018)	0.008 (0.009)	− 11.696 (4.102)	− 2.536
AGE100	MA	0.218 (0.017)
	MAD	0.21 (0.018)	0.025 (0.013)
	MAD*	0.217 (0.017)	0.021 (0.01)
	MAI	0.219 (0.017)		26.145 (6.628)	3.261
	MAID	0.213 (0.018)	0.02 (0.013)	28.143 (7.546)	3.51
	MAID*	0.218 (0.017)	0.017 (0.01)	28.307 (7.675)	3.53
TNB	MA	0.101 (0.016)
	MAD	0.093 (0.016)	0.024 (0.018)
	MAD*	0.101 (0.015)	0.014 (0.013)
	MAI	0.102 (0.016)		− 7.278 (3.174)	− 2.197
	MAID	0.095 (0.017)	0.021 (0.018)	− 7.606 (3.51)	− 2.296
	MAID*	0.102 (0.016)	0.012 (0.013)	− 7.56 (3.444)	− 2.282

\({\mathrm{h}}_{a}^{2}\): additive heritability; \({\mathrm{h}}_{d}^{2}=\frac{{\upsigma }_{d}^{2}}{{\upsigma }_{a}^{2}+{\upsigma }_{d}^{2}+{\upsigma }_{e}^{2}}\): genotypic dominance effect heritability; \({\mathrm{h}}_{{d}^{*}}^{2}=\frac{{\upsigma }_{{d}^{*}}^{2}}{{\upsigma }_{a}^{2}+{\upsigma }_{{d}^{*}}^{2}+{\upsigma }_{e}^{2}}\): classical dominance effect heritability; \({\sigma }_{p}\) is the square root of total phenotypic variance; MA: additive model; MAI: additive plus inbreeding depression model; MAD: additive plus genotypic dominance model; MAD*: additive plus classical dominance model; MAID: additive plus inbreeding depression plus genotypic dominance model; MAID*: additive plus inbreeding depression plus classical dominance model; ADG: average daily gain (g); BF: backfat thickness (mm); LMD: loin muscle depth (mm); AGE100: days to 100 kg; TNB: total number of piglets born at first parity

ISSN: 1297-9686