Table 2 Description and probability distributions used for the different shedding routes and levels (from [10]).

α

α ₁, milk

Probability distribution of the shedding routes for the I ⁻ cows

0.31

α ₂, mucus/faeces

0.62

α ₃, milk + mucus/faeces

0.07

β

β ₁, milk

Probability distribution of the shedding routes for the I ⁺ cows after 4 weeks post-calvingss

0.61

β ₂, mucus/faeces

0.33

β ₃, milk + mucus/faeces

0.06

β _calv

β _calv1 , milk

Probability distribution of the shedding routes for the I ⁺ cows in the 4 first weeks post-calving

0.14

β _calv3 , mucus/faeces

0.5

β _calv3 , milk + mucus/faeces

0.36

γ

γ ₁, milk

Probability distribution of the shedding routes for the \(I^{milk pers}\) cows after 4 weeks post-calving

0.83

γ ₃, milk + mucus/faeces

0.17

γ _calv

γ _calv1 , milk

Probability distribution of the shedding routes for the \(I^{milk pers}\) cows in the 4 first weeks post-calving

0.25

γ _calv3 , milk + mucus/faeces

0.75

Q1

Low level

Probability distribution of the shedding levels for all the I ⁻ and for the I ⁺ shedding in mucus/faeces after 4 weeks post-calving

0.85

Mid-level

0.15

High level

0

Q2

Low level

Probability distribution of the shedding levels for the I ⁺ shedding in milk after 4 weeks post-calving

0.4

Mid-level

0.5

High level

0.1

Q3

Low level

Probability distribution of the shedding levels for all the I ⁺ in the 4 first weeks post-calving

0.25

Mid-level

0.25

High level

0.5

Q4

Low level

Probability distribution of the shedding levels for the \(I^{milk pers}\) shedding in mucus/faeces after 4 weeks post-calving

0.6

Mid-level

0.4

High level

0

Q5

Low level

Probability distribution of the shedding levels for all the \(I^{milk pers}\) shedding in milk and for the \(I^{milk pers}\) in the 4 first weeks post-calving

0.15

Mid-level

0.6

High level

0.25