Response to genomic selection: The Bulmer effect and the potential of genomic selection when the number of phenotypic records is limiting

Table 1 Comparison of the Bulmer-effect for mass selection and genomic selection

Selection methoda	h ²	$r_{g {\hat{g}}_{0}}$	Equilibrium genetic variance	Equilibrium accuracy	Δ% b
Mass selection	0.25	0.5	0.21	0.47	−14%
Genomic selection	0.25	0.5	0.22	0.39	−27%
Mass selection	0.10	0.32	0.093	0.306	−7%
Mass selection	0.50	0.71	0.367	0.651	−21%
Mass selection	-	any value	-	-	−27%

^aComparison of the Bulmer-effect for mass selection and genomic selection with different heritabilities (h²) and accuracies of EBV ( $r_{g {\hat{g}}_{0}}$ ); phenotypic variance equals 1; selected proportion equals 5%; ^bΔ% is the relative difference between the initial response and the Bulmer-equilibrium response.

ISSN: 1297-9686