Skip to main content
. 2020 Jul 29;52:42. doi: 10.1186/s12711-020-00562-6

Table 3.

ssGBLUP performance a, with different heritabilities and GPSb intensities

Measure/intensity of GPS Noc Highd Very highe
Heritability of 0.5
 Preselection accuracyf Not applicable 0.81 (0.81–0.81) 0.81 (0.81–0.81)
 Subsequent selection accuracyg 0.88 (0.88–0.88) 0.66 (0.64–0.68) 0.65 (0.63–0.67)
 Absolute biash 0.01 (0.01–0.01) 0.03 (0.01–0.05) 0.04 (0.02–0.06)
 Dispersion biasi 1.02 (1.02–1.02) 1.06 (1.04–1.08) 1.05 (1.03–1.07)
 True realized genetic gainj 1.53 (1.49–1.57) 1.48 (1.44–1.52) 1.45 (1.41–1.49)
 Estimated realized genetic gaink 1.50 (1.48–1.52) 1.45 (1.43–1.47) 1.43 (1.41–1.45)
Heritability of 0.3
 Preselection accuracyf Not applicable 0.78 (0.78–0.78) 0.78 (0.78–0.78)
 Subsequent selection accuracyg 0.86 (0.86–0.86) 0.59 (0.57–0.61) 0.58 (0.56–0.60)
 Absolute biash 0.01 (0.01–0.01) 0.02 (0.00–0.04) 0.02 (0.00–0.04)
 Dispersion biasi 1.01 (1.01–1.01) 1.01 (0.97–1.05) 0.98 (0.94–1.02)
 True realized genetic gainj 1.46 (1.42–1.50) 1.39 (1.35–1.43) 1.37 (1.33–1.41)
 Estimated realized genetic gaink 1.45 (1.41–1.49) 1.41 (1.37–1.45) 1.39 (1.35–1.43)
Heritability of 0.1
 Preselection accuracyf Not applicable 0.71 (0.69–0.73) 0.71 (0.69–0.73)
 Subsequent selection accuracyg 0.80 (0.78–0.82) 0.48 (0.44–0.52) 0.48 (0.44–0.52)
 Absolute biash 0.01 (0.01–0.01) 0.03 (0.01–0.05) 0.03 (0.01–0.05)
 Dispersion biasi 1.02 (1.00–1.04) 1.01 (0.95–1.07) 1.00 (0.94–1.06)
 True realized genetic gainj 1.38 (1.32–1.44) 1.26 (1.18–1.34) 1.24 (1.16–1.32)
 Estimated realized genetic gaink 1.36 (1.30–1.42) 1.28 (1.22–1.34) 1.26 (1.20–1.32)

aResults shown only for selection candidates in the most recent generation (i.e. generation 15), and the results are means of 10 replicates (and 95% confidence intervals)

bGenomic preselection

cNo preselection

d10% of the male and 15% of the female selection candidates were preselected

e5% of the males and 12.5% of the female selection candidates were preselected

fCorrelation between true and genomic estimated breeding values of all selection candidates

gCorrelation between true and genomic estimated breeding values of all preselected animals

hDifference between average true breeding value and average genomic estimated breeding value of preselected animals, expressed in additive genetic standard deviation

iCoefficient of the regression of true on genomic estimated breeding values of the preselected animals

jDifference between average true breeding value of the subsequently selected animals and average true breeding value of their parents, expressed in additive genetic standard deviation

kDifference between average genomic estimated breeding value of the subsequently selected animals and average genomic estimated breeding value of their parents, expressed in additive genetic standard deviation