Susceptibility and infectivity h^{2}^{a}^{,}^{b} | Infectivity h^{2}^{c} | Sample size^{a} | Prevalence^{d} | Group size^{b} | Sampling frequency for unknown infection times^{e} |
---|---|---|---|---|---|

0.2 | |||||

0.4 | 500 | 0.3 | 2 | ||

0.1 | 0.4 | 2 | |||

0.33 | 0.5 | 5 | |||

0.4 | 0.6 | 10 | 10 | ||

0.67 | 0.7 | 30 | |||

0.8 | 0.8 | 2000 | 0.8 | 60 | |

0.9 | 20 | ||||

1 |

The base scenario assumed the values in boldface type and known infection times. Unknown environmental variance was set at 1.

↵a To evaluate the effect of heritability and sample size on estimates of heritability and effective contact rates (Figure 2 and Figure S1).

↵b To evaluate the effect of heritability and group size on heritability estimates, prediction accuracies, and sire ranking (Figure 4 and Figure S2).

↵c To evaluate the effect of genetic variation of infectivity on prediction accuracies (Figure 3).

↵d To evaluate the effect of disease prevalence on prediction accuracies (Figure 5).

↵e To evaluate the effect of sampling frequency on prediction accuracies (Figure 6).