Table 2. Percentage increase in response to recurrent selection, for the unselected population scenario.

	CV of the SD of gametic GEBV $\left(SD\left({\sigma }_{\widehat{g}}\right)/0.5{\sigma }_{\widehat{A}}\right)$
p	0.05	0.10a	0.15	0.20
0.5	0.3	0.2	0.2	−0.2
0.2	0.1	0.3	0.9	1.6
0.1	0.2	0.6	1.4	2.4
0.05	0.2	0.8	1.7	3.2
0.01	0.3	1.3	3.1	5.8
0.005	0.3	1.4	3.6	7.1
0.001	0.5	2.0	5.2	10.8

Values are the relative increase (%) in the mean GEBV of selected offspring when parents are selected on Index 5, relative to selection of parents on ordinary GEBV; $100\%\frac{\left[{\overline{A}}_{\text{Index5}}-{\overline{A}}_{\text{candidates}}\right]}{\left[{\overline{A}}_{\text{Index1}}-{\overline{A}}_{\text{candidates}}\right]}-100\%$.

^aThis is the value found in dairy cattle (Segelke et al. 2014).