|
Measure
|
Type and intensity of preselection
|
|---|
|
No preselection
|
High GPS
|
Very high GPS
|
High PAPS
|
Very high PAPS
|
High RPS
|
Very high RPS
|
|---|
|
Preselection accuracya
|
Not applicable
|
0.71 (0.69–0.73)
|
0.71 (0.69–0.73)
|
0.44 (0.42–0.46)
|
0.44 (0.42–0.46)
|
0.00 (0.00–0.00)
|
0.00 (0.00–0.00)
|
|
Subsequent selection accuracyb
|
0.80 (0.78–0.82)
|
0.48 (0.44–0.52)
|
0.48 (0.44–0.52)
|
0.69 (0.67–0.71)
|
0.68 (0.66–0.70)
|
0.73 (0.71–0.75)
|
0.73 (0.73–0.73)
|
|
Absolute biasc
|
0.01 (−0.01–0.03)
|
0.03 (0.01–0.05)
|
0.03 (0.01–0.05)
|
0.03 (0.01–0.05)
|
0.04 (0.02–0.06)
|
0.05 (0.01–0.09)
|
0.05 (0.01–0.09)
|
|
Dispersion biasd
|
1.02 (1.00–1.04)
|
1.01 (0.95–1.07)
|
1.00 (0.94–1.06)
|
1.01 (0.99–1.03)
|
1.01 (0.97–1.05)
|
1.01 (0.97–1.05)
|
1.02 (0.98–1.06)
|
|
True realized genetic gaine
|
1.38 (1.32–1.44)
|
1.26 (1.18–1.34)
|
1.24 (1.16–1.32)
|
1.11 (1.03–1.19)
|
1.00 (0.92–1.08)
|
0.58 (0.54–0.62)
|
0.39 (0.37–0.41)
|
|
Estimated realized genetic gainf
|
1.36 (1.30–1.42)
|
1.28 (1.22–1.34)
|
1.26 (1.20–1.32)
|
1.12 (1.06–1.18)
|
1.01 (0.95–1.07)
|
0.58 (0.56–0.60)
|
0.37 (0.35–0.39)
|
- Results shown only for the selection candidates in the most recent generation (i.e. generation 15), and the results are means over 10 replicates (and 95% confidence intervals)
- Types of preselection: GPS genomic preselection; PAPS parent average preselection; RPS random preselection
- Intensities of preselection: No preselection; high preselection - 10% of the male and 15% of the female selection candidates preselected; very high preselection - 5% of the male and 12.5% of the female selection candidates preselected
- aCorrelation between true and genomic estimated breeding values of all the selection candidates
- bCorrelation between true and genomic estimated breeding values of the preselected animals
- cDifference between average true breeding value and average genomic estimated breeding value of preselected animals, expressed in additive genetic standard deviation
- dCoefficient of regression of true on genomic estimated breeding values of the preselected animals
- eDifference between average true breeding value of subsequently selected animals and average true breeding value of their parents, expressed in additive genetic standard deviation
- fDifference 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
