Table 1 Theoretical number of different contacts per year in 5 example herds
From: Risk assessment as a tool for improving external biosecurity at farm level
a. Examples included three cattle herds and two pig herds. Input values used in the baseline scenario | |||||
Contact | Dairy herd 180 milking cows | Suckler herd 65 cows | Calf fattening herd 120 calves | Farrow-to-finish herd 484 sows | Specialised fattening herd 1600 pigs |
Introduced live animalsa | 10 | 2 | 108, in 18 batches | 200, in 20 batches | 5200, in 26 batches |
Animal transport vehiclesb | 25 | 3 | 20 | 60 | 52 |
Deadstock collections | 17 | 2 | 3 | 25 | 5 |
AI technician | 280 | NAc | NA | NA | NA |
Veterinarian | 20 | 2 | 4 | 12 | 6 |
Hoof trimmer | 2 | 1 | NA | NA | NA |
b. Examples included three cattle herds and two pig herds. Input values used in the low-risk scenario | |||||
Introduced live animalsa | 1 | 1 | 100, in 5 batches | 100, in 10 batches | 5200, in 13 batches |
Animal transport vehiclesb | 20 | 3 | 16 | 50 | 26 |
Deadstock collections | 15 | 2 | 3 | 20 | 5 |
AI technician | 0 | NAc | NA | NA | NA |
Veterinarian | 20 | 2 | 4 | 12 | 6 |
Hoof trimmer | 2 | 1 | NA | NA | NA |