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Table 11 Genetic lag (years) between nucleus and the commercial tier of the breeding scheme by year 20 in different scenarios

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

Trait

Base scenario

Pheno + GS

Pheno + selective GS

Pheno + parentage

Phenotypic selection

Pheno + GS + open

Pheno + parentage + open

GS only

Selective GS only

Base

With recording

CWT

10.6

7.6

7.6

7.8

9.4

6.7

6.7

7.9

7.9

WWT

10.6

7.7

7.7

7.8

9.5

6.7

6.7

8.0

8.0

NLB

11.0

8.2

8.2

8.3

8.8

7.4

8.0

8.0

8.0

EWT

10.8

7.8

7.8

8.0

9.8

7.1

7.1

9.8

9.8

BCS

10.6

7.2

7.2

6.8

10.6

7.2

7.2

9.5

9.5

SURm

11.5

8.5

8.5

8.2

11.5

8.5

8.0

14.0

14.0

WWTm

11.5

8.3

8.3

8.3

11.5

7.5

8.2

8.4

8.4

Stay

9.2

4.8

4.8

4.8

9.2

5.2

4.8

11.0

11.0

SUR

10.9

7.0

7.0

7.1

10.6

6.1

6.0

13.0

13.0

  1. See scenarios description of Fig. 1 and details in Table 7