The influence of acid tolerance response and diet on the survival of Salmonella serotypes through the gastrointestinal tract of pigs

Date
2009-01-01
Authors
Rajtak, U.
Leonard, F.
Fanning, S.
Bolton, D.
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Abstract

Research findings suggest that acid supplementation of feed and feed characteristics affect the survival of Salmonella in pigs although results are not always consistent. The acid tolerance response (ATR) of Salmonella, induced by mildly acidic conditions, which can occur both within and outside the host, may influence the survival and transmission of Salmonellae in pigs fed certain diets. This study investigates the role of the pH-dependent ATR on relative survival of five Salmonella serotypes in gastrointestinal contents of pigs fed regular or acid-supplemented feeds. Stomach, caecal and colon contents were obtained from pigs fed four different diets (6 pigs/diet, pelleted or meal feed with or without potassium difomwte, KDF).

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