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Table 7 Description of simulation scenarios modelled to the multiplier tier of a multi-tiered breeding scheme

From: Genetic and economic benefits of selection based on performance recording and genotyping in lower tiers of multi-tiered sheep breeding schemes

Scenario

Policies

Performance recording

DNA parentage

Genomic selection (GS)

Genotyping strategy

Nucleus replacement policy

Base scenarioa

No

No

Closed

Pheno + GS

Complete

No

Yes

All

Closed

Pheno + selective GS

Complete

No

Yes

Selected

Closed

Pheno + parentage

Complete

Yes

No

All

Closed

Phenotypic selection

Simple

No

No

Closed

Pheno + GS + open

Complete

No

Yes

All

Open

Pheno + parentage + open

Complete

Yes

No

All

Open

GS Only

No

Yes

All

Closed

Selective GS Only

No

Yes

Selected

Closed

  1. aRefers to the base scenario in which no performance recording or genetic merit selection is undertaken in the multiplier flock