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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.