Analysis of polygenic selection in purebred and crossbred pig genomes using generation proxy selection mapping

Table 6 Proportion of variation in AGE (difference, in months, between each pig’s birth date and January 2006) explained by SNPs for each purebred subset using simulated data

Subset	Populations	Pigs, n	SNPs, n	PVE	SE
1	Duroc	16,595	38,286	0.83	0.005
2	Landrace	15,457	45,090	0.85	0.004
3	Yorkshire	15,772	45,036	0.85	0.005
5	Duroc and Landrace (Method 1)	32,066	46,008	0.90	0.003
5	Duroc and Landrace (Method 2)	32,066	46,008	0.88	0.003
6	Duroc and Yorkshire (Method 1)	32,387	46,098	0.89	0.003
6	Duroc and Yorkshire (Method 2)	32,387	46,098	0.88	0.003
8	Landrace and Yorkshire (Method 1)	31,240	46,260	0.91	0.002
8	Landrace and Yorkshire (Method 2)	31,240	46,260	0.89	0.003
11	Duroc, Landrace, and Yorkshire (Method 1)	47,849	46,422	0.93	0.002
11	Duroc, Landrace, and Yorkshire (Method 2)	47,849	46,422	0.90	0.002

PVE proportion of variation in AGE explained by SNPs (i.e., SNP heritability); SE standard error; n = number
Method 1 = genotypes simulated as if populations recently diverged (same founder population); Method 2 = genotypes simulated as if populations are completely unrelated (different founder populations)

ISSN: 1297-9686