Table 5 Sensitivity of suckler herd results in Table 4 to 10% increase in the estimating model’s parameter settings
From: Predicted costs and benefits of eradicating BVDV from Ireland
Parameter | New setting* | Percent change in costs/cow/year |
|---|---|---|
Epidemiological parameters: | ||
Prevalence of antibody positive herds | 0.825 | 0.6 |
Prevalence of herds with one or more PI | 0.275 | 7.4 |
Risk of virus entry into a herd in any one year | 0.209 | 7.8 |
Proportion of heifers that become transient infected if naïve herd infected | 0.825 | 1.3 |
Proportion of cows that become transient infected if naïve herd infected | 0.825 | 5.1 |
Financial parameters: | ||
Sale value of normal male calf (€) | 495 | 5.5 |
Sale value of normal female calf (€) | 436 | 5.2 |
Costs of immunosuppression effects (€/calf at risk) | 3.4 | 1.4 |
Opportunity cost of farm labour (€/hour) | 9.11 | 5.6 |
Replacement heifer cost (€) | 1,121 | 7.5 |
Value of cull cow (€) | 872 | −1.0 |
Veterinary charges (€/hour or visit) | 69 | 2.8 |
Other minor cost assumptions converted from £ to € | 1.24 | 0.0 |