Economic optimization of full-sib test group size and genotyping effort in a breeding program for Atlantic salmon

Table 3 Selection indices used in the nucleus breeding program

Trait	Records	Females and 1st step males	2nd step males
TGC	Own performance	✔	✔
	Pedigree index^a	✔	✔
	119 full-sibs	✔	✔
	120 half-sib	✔	✔
	GEBV^b for 32 + n₄ full-sibs		✔
\({\text{R}}_{0}\)	Pedigree index	✔	✔
	\({n}_{1}\) full-sibs	✔	✔
	\({n}_{1}\) half-sibs	✔	✔
	GEBV for \({n}_{3}\) full-sibs		✔
TGC, DGY, FilletFat, and ViscFat	Pedigree index	✔	✔
	\({n}_{2}\) full-sibs	✔	✔
	\({n}_{2}\) half-sibs	✔	✔
	GEBV for \({n}_{4}\) full-sibs		✔

TGC thermal growth coefficient (g^1/3/(day degrees × 1000)), \({{R}}_{0}\) for sea lice, DGY deheaded gutted yield (%), FilletFat fillet fat content (%), ViscFat visceral fat score (from 0 to 4)
^aSelAction condenses all ancestral information into estimated breeding values of parents as described by Wray and Hill [23]. In SelAction, this is termed ‘BLUP’.
^bBreeding value estimated using within-family genomic prediction

ISSN: 1297-9686