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

Table 2 Summary of pedigree records for all genotyped pigs

Population	Pigs, n	Founders, n^a	Sires, n	Dams, n	Birth month and year		Generations, n
Population	Pigs, n	Founders, n^a	Sires, n	Dams, n	Minimum	Maximum	Generations, n
Duroc	16,802	17	500	3596	August 2010	April 2020	14
Landrace	19,342	82	512	5862	August 2010	April 2020	10
Yorkshire	18,368	18	446	5367	January 2011	April 2020	14
Crossbred	8532	–	206	4428	March 2015	September 2019	13

^aA founder was a pig of generation 0; only the sire side of the pedigree was known for crossbred pigs
n = number

ISSN: 1297-9686