Table 2.

Biosecurity item score and overall score for each biosecurity component (isolation, traffic control and sanitation).

Biosecurity components
Isolation		Traffic control		Sanitation
Biosecurity measure	Score	Biosecurity measure	Score	Biosecurity measure	Score
Farms are fenced	41	Piggeries built based on the linear flow principle	38	Footbath is functional and used	29
Distance between two farms ≥ 500 m	58	Entry restriction sign post present	0	Piggeries broom-clean every day	90
There is only one piglets supplier for the farm	40	Each employee is assigned to a single building	74	Disinfectants are used	90
New animals are quarantined	69	Visitors not allowed to handle pigs without washing their hands	21	Sanitary lock is present	0
Animals of different age not in the same room	96	Unsold animals from market quarantined prior to reintroduction into the herd	81	Vehicles entering on farm are disinfected	4
Use of herd specific clean coveralls and boots on farm	6	Production materials not exchanged among farms	93	Shoes cleaning-station is present	25
Other animal species (fowl, sheep, goat) absent on the farm	31	Farmers do not use boars from other farms	66	Cleanout implemented	60
All-in all-out system implemented (all age categories)	23			Feedstuffs sheltered against rodents	45
Employees do not rear pigs at home	84			Drinking water is treated with chemicals (chlorine)	27
Area around farm is bush- and tree- free	16			Water and slurry drained away from the piggery	69
				Pigs are vaccinated (erysipelas)	89
				Diseases on farms are reported	42
				Vaccination calendar respected	82
				Sick animals are unsold	56
Overall score  (mean ± SD)	46.40 ± 29.7	Overall score  (mean ± SD)	53.29 ± 34.3	Overall score  (mean ± SD)	50.57 ± 31.1