Table 6.

Sensitivity of dairy herd results in Table 4 to 10% increase in the estimating model’s parameter settings

Parameter	New setting*	Naïve herd	Percent change in costs /cow/year
Prevalence of PI in purchased animals	0.00825	1.0	0.5
Probability of biosecurity breakdown to BVD in any one year	0.1463	4.3	1.7
Milk price (€/litre)	0.323	6.5	6.4
Replacement heifer cost (€)	1,177	2.1	1.0
Value of cull cow (€)	879	−0.1	−0.3
Veterinary & Medicine charges (€/cow)	70	−1.5	0.0

*See Table 2 for original parameter settings.