Investigation of the Distribution of Salmonella within an Integrated Pig Breeding and Production Organisation in the United Kingdom

Table 1

Potential risk factors analysed from questionnaire.

Housing	Management	Biosecurity/hygiene
Type of pen (slatted, push-through, straw yard)	Number of staff; Number of pigs on farm; Time as a pig farm; Age groups housed separately; Feed source; Sick pens; Reintegration of recovered pigs; Bedding source; Bedding type; Feeder/drinker systems	Staff contact with other pigs; Visitors who have contact with other pigs; Water supply (mains or borehole); Drainage; Presence of wildlife species; Proximity of waterways, scrubland, pig wastes, cattle wastes, or sewage treatment/landfill sites; Feed storage (capacity and sealed/open bins); Presence of biosecurity measures (boot dips, wheel wash, and visitor/staff clothing); Pigs loaded at perimeter; Site contained within perimeter fence; Rodent controls; Disinfectant: type and frequency