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Table 3 Summary statistics for deregressed estimated breeding values (EBVs) and accuracies (r 2 ) produced by the American Angus Association for the 3,570 genotyped animals

From: A novel analytical method, Birth Date Selection Mapping, detects response of the Angus (Bos taurus) genome to selection on complex traits

Trait1 Units Heritability2 N4 Mean EBV ± SD5 Mean Accuracy ± SD Cmax6 C7 Vgenetic8
Birth Weight lb 0.42 3241 4.03 ± 5.95 0.78 ± 0.24 0.7962 0.7703 23.42
Weaning Weight lb 0.20 3229 86.69 ± 45.98 0.68 ± 0.32 0.8221 0.7038 690.86
Maternal Milk lb 0.14 2067 33.79 ± 30.01 0.70 ± 0.27 0.8619 0.7086 373.15
Yearling Weight lb 0.49 2776 154.03 ± 78.15 0.69 ± 0.29 0.8268 0.7804 1961.63
Yearling Height in 0.45 2250 0.74 ± 1.22 0.70 ± 0.25 0.7962 0.7962 0.6165
Carcass Weight lb 0.40 2457 30.93 ± 84.08 0.41 ± 028 0.9141 0.6274 1438.86
Marbling units 0.45 3237 0.64 ± 1.14 0.43 ± 0.25 0.9127 0.9127 0.3542
Ribeye Muscle Area in2 0.51 3269 0.16 ± 1.04 0.47 ± 0.23 0.9141 0.9141 0.3775
Fat Thickness in 0.34 3189 0.027 ± 0.162 0.40 ± 0.23 0.9141 0.9141 0.0072
Mature Weight lb 0.55 1321 67.28 ± 135.26 0.64 ± 0.25 0.8485 0.5586 5818.80
Mature Height in 0.82 1291 1.08 ± 2.25 0.64 ± 0.25 0.8429 0.5602 1.504
Scrotal Circumference in 0.43 2479 0.55 ± 1.83 0.69 ± 0.25 0.8176 0.6977 1.641
Calving Ease Direct % 0.18 3217 8.30 ± 19.77 0.62 ± 0.26 0.8681 0.7055 154.70
Calving Ease Maternal % 0.12 1966 12.14 ± 23.77 0.59 ± 0.27 0.9026 0.4211 146.00
Docility % 0.37 698 15.52 ± 21.44 0.48 ± 0.27 0.9267 0.3430 126.94
Heifer Pregnancy % 0.13 1366 15.81 ± 47.64 0.50 ± 0.27 0.9049 0.7117 711.45
Birth Date yr 0.533 3570 1998.93 ± 8.98 1.00 ± 0.00 N/A N/A 25.83
  1. 1See Supplementary Information for trait definitions.
  2. 2Narrow sense heritability used by the American Angus Association to compute estimates of additive genetic merit.
  3. 3Estimated from genomic BLUP analysis.
  4. 4Number of breeding values that could successfully be deregressed or birth dates.
  5. 5Deregressed estimated breeding values or birth dates.
  6. 6Largest possible value of C imposed by the constraint (1+Fi)/ri2>C×Gii, which ensures that weights for all animals’ deregressed EBV are strictly positive. Fi is the pedigree inbreeding coefficient, ri2 is the accuracy of the deregressed breeding value, and Gii is the diagonal of the genomic relationship coefficient matrix for the ith animal. See[23] for further explanation.
  7. 7Proportion of additive genetic variation explained by 45,073 SNPs computed as Vmarkers/Vgenetic. See[23] for further explanation.
  8. 8Estimated additive genetic variance from the analysis of deregressed breeding values or birthdates.