Table 2.

Farm management and structure information collected from questionnaires used on the nine outdoor pig farms (copies of the forms can be requested from the authors)

*Number of each type of livestock animals on farm

Farrowing frequency, Pig flow – continuous or batch

*Size of outdoor areas and number of pigs present in each area

How long has field been continuously occupied by pigs or empty of pigs/use of field between pig cycles

*Soil type, condition and wetness/use of pig nose rings

*Cleaning and disinfection of outdoor equipment

Use of indoor service area

*Pet and wildlife access to pig enclosures and feed/evidence of contamination by rodents and birds/controls for wild birds/rodent control training of staff

Use and maintenance of boot dips, boots and farm overalls

Vehicle movements that cross the farm perimeter and disinfection of vehicles

Visitor protocols

Have feed, straw or bedding brought onto farm had contact with pigs or pig manure

*Sourcing of pigs/mixing and movement of pig on the site/quarantine procedures

Drinking-water source/feed stores used

*Use of feed additives – acids, probiotics, zinc, etc.

*Salmonella vaccination/antimicrobial usage over last year or since last visit

*Health conditions reported by vet in last year or since last visit/ranked current illness problems on farm/sick pig policy

Herd performance – litters born, parity, mortality, feed performance

*Indicates information that was updated at subsequent farm visits.