Table 2.
Results of the scenarios on a low-hygiene herd with a baseline true within-herd prevalence of 45%.
| Scenario | |||
|---|---|---|---|
| ECM (5%; 95%) | TP (5%; 95%) | AP (5%; 95%) | |
| No control | 19.83 (19.57; 20.08) | 38.73 (28.43; 47.80) | 27.32 (19.60; 34.32) |
| Three actions | 19.90 (19.66; 20.16) | 19.61 (10.78; 28.30) | 15.12 (8.33; 22.06) |
| All actions | 20.03 (19.76; 20.32) | 0.00 (0.00; 0.00) | 0.99 (0.00; 2.48) |
| Remove calves | 19.84 (19.59; 20.08) | 34.31 (22.80; 44.35) | 24.15 (16.33; 31.53) |
| Handle colostrum | 19.84 (19.60; 20.08) | 33.25 (22.69; 43.00) | 23.96 (15.76; 31.26) |
| Handle waste milk | 19.86 (19.61; 20.12) | 30.64 (19.99; 41.48) | 22.44 (14.29; 30.40) |
| Cull pos. cows | 20.01 (19.75; 20.29) | 0.00 (0.00; 1.47) | 1.46 (0.00; 2.96) |
| EXP (5%; 95%) | INC (5%; 95%) | TNR (5%; 95%) | |
| No control | 5.04 (4.97; 5.10) | 8.00 (7.86; 8.13) | 2.97 (2.86; 3.05) |
| Three actions | 5.17 (5.10; 5.23) | 8.03 (7.90; 8.16) | 2.87 (2.76; 2.95) |
| All actions | 5.16 (5.09; 5.23) | 8.11 (7.97; 8.23) | 2.95 (2.85; 3.03) |
| Remove calves | 5.14 (5.07; 5.20) | 8.01 (7.87; 8.12) | 2.87 (2.77; 2.95) |
| Handle colostrum | 5.09 (5.04; 5.15) | 8.01 (7.87; 8.14) | 2.92 (2.81; 3.01) |
| Handle waste milk | 5.07 (5.01; 5.14) | 8.02 (7.88; 8.14) | 2.94 (2.85; 3.03) |
| Cull pos. cows | 5.08 (5.01; 5.15) | 8.10 (7.97; 8.23) | 3.02 (2.93; 3.11) |
ECM, kilograms of ECM milk yield from of all cows on the farm; TP, true within-herd prevalence; AP, apparent within-herd prevalence; EXP, expenses in €; INC, income in €; TNR, total net revenue in million € over 10 years.
The numbers are median results with 5 and 95% confidence limits, calculated over the 10 simulated years. Milk yield and economic values are shown in millions. Prevalences shown in % are the resulting prevalences at the end of the simulations.