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

Table 9 Number of SNPs significantly associated with AGE (difference, in months, between each pig’s birth date and January 2006) for each subset

Subset	Populations	Pigs, n	SNPs, n	Significant SNPs, n^a
1	Duroc	16,595	38,294	100
2	Landrace	15,457	45,085	147
3	Yorkshire	15,772	45,027	138
4	Crossbred	8447	46,529	49
5	Duroc and Landrace	32,066	45,999	371
6	Duroc and Yorkshire	32,387	46,106	527
7	Duroc and crossbred	25,053	46,341	148
8	Landrace and Yorkshire	31,240	46,253	177
9	Landrace and crossbred	23,905	46,440	172
10	Yorkshire and crossbred	24,230	46,449	182
11	Duroc, Landrace and Yorkshire	47,849	46,428	702
12	Duroc, Landrace, and crossbred	40,513	46,415	533
13	Duroc, Yorkshire, and crossbred	40,837	46,424	609
14	Landrace, Yorkshire, and crossbred	39,688	46,458	274
15	Duroc, Landrace, Yorkshire, and crossbred	56,296	46,456	854

ISSN: 1297-9686