Table 1.

Simulation parameters of the population structure

Steps	Population structure	Values
	Number of replicates	10
	Overall heritability	0.3
	QTL heritability	0.3
	Phenotypic variance	1.0
Step 1: Historical generations (HGs)	Foundation population size of (HGs)	2000
	Number of generations in phase 1	1000
	Population size in phase 1	2000
	Number of generations in phase 2	200
	Population size in the end of phase 2	400
	The number of males in the last (HG)	200
	The number of females in the last (HG)	200
	Number of males from HG	40
	Number of females from HG	200
Step 2: Expanded generations (EGs)	Number of generations	1
	Litter size	5
	The proportion of male progeny	50%
	Mating design	Random
	Number of males from EG	100
	Number of females from EG	500
Step 3: Recent generations	Number of generations	10
	Litter size	5
	The Proportion of male progeny	50%
	Mating design	Random
	Sire replacement	80%
	Dam replacement	40%
	Selection design	EBV