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Table 1 Heritability (h 2 ) of the traits, number of bulls in training (Train) and validation datasets (Valid gen ) for GBLUP and single-step blending

From: Comparison on genomic predictions using three GBLUP methods and two single-step blending methods in the Nordic Holstein population

Trait

h2

TrainGBLUP

Trainsingle

Dif1

Validgen2

Milk

0.39

3003

9137

6134

1395

Fat

0.39

3003

9137

6134

1395

Protein

0.39

3003

9137

6134

1395

Growth

0.30

2538

6690

4152

1640

Fertility

0.04

3037

10909

7872

1378

Birth index

0.06

3045

10586

7541

2167

Calving index

0.03

3040

11538

8498

1501

Mastitis

0.04

3006

9174

6168

1461

Health

0.02

3026

9050

6024

1214

Body conf.

0.30

2884

7492

4608

1380

Feet & Leg

0.10

2925

7727

4802

1379

Udder conf.

0.25

2928

7743

4815

1380

Milkingspeed

0.26

2928

7725

4797

1380

Temperament

0.13

2926

7691

4765

1371

Longevity

0.10

2980

8740

5760

916

Yield

0.39

3003

9137

6134

1395

  1. 1Number of additional non-genotyped bulls used in single-step blending compared to GBLUP (Col.4 – Col.3); 2 Only genotyped bulls in the validation dataset.