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This study estimated the effect of discontinued use of antimicrobial growth promoters (duAGPs) oil the risk of antibiotic treatment for diarrhoea, arthritis. pneumonia, unthriving and miscellaneous disorders in Danish pig farms. The estimation was done in a case-crossover study comparing: (1) the proportion of days per farm where treatment was performed (PDT) and (2) the proportion of pigs treated per day per farm at days where treatment was performed (PPT) before and after duAGPs at 68 farrow-to-finish farms. The farms were selected using, a two-stage (veterinarian/farm) convenience sampling. On average, during the first year after duAGPs there was a significant increase in the risk of antibiotic treatment for diarrhoea (PDT: OR 2.5. 95% CI 1.7-3.8; PPT: OR 1.6, 95% CI 1.1-2.2). However, the effect varied among farms - some farms experienced substantial problems, while others experienced few problems after duAGPs. No effect was identified for the risk of treatment for other diseases.
Original languageEnglish
JournalEpidemiology and Infection
Volume136
Issue number1
Pages (from-to)92-107
ISSN0950-2688
DOIs
StatePublished - 2008
Peer-reviewedYes
CitationsWeb of Science® Times Cited: 7
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