Using a very low-density SNP panel for genomic selection in a breeding program for sheep

Table 1 Information taken into account for (genomic) breeding value estimation and imputation step according to scenarios

Scenarios^a	GSsc^c	GSs_Ic^c	GSscd^c	GSs_Icd^c	GSs_Icd_pop^c
Genotypes (G^d) or imputed genotype (IG^e)
Sires	G	G	G	G	G
Male candidates	G	IG	G	IG	IG
Dams			G	IG	IG
Imputation methodology: population (P)/familial (F)		P + F		P + F	P

^aPhenotypes and pedigree were included in all scenarios
^bCS = classical selection design
^cGS = genomic selection design; GSsc, sires and candidates had medium-density genotypes; GSs_Ic, sires had medium-density genotypes and candidates had medium-density genotypes imputed from very low-density genotypes; GSscd, sires, candidates and dams had medium-density genotypes; GSs_Icd, sires had medium-density genotypes and candidates and dams had medium-density genotypes imputed from very low-density genotypes; GSs_Icd_pop, sires had medium-density genotypes and candidates and dams had medium-density genotypes imputed from very low-density genotypes without using the pedigree information
^dMedium-density genotypes (46 K)
^eMedium-density genotypes (46 K) imputed from very low-density genotypes (≤ 1000)

ISSN: 1297-9686