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Berl Munch Tierarztl Wochenschr. 2001 Sep-Oct;114(9-10):353-5.

Impact of commercial pre-harvest processes on the prevalence of Salmonella enterica in cull sows.

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Iowa State University, College of Veterinary Medicine, Ames, Iowa, USA.


This study examined the impact of transport and lairage on Salmonella enterica prevalence in cull sows held under commercial conditions. Five sampling periods over 10 weeks yielded 181 selected culls. Fecal sample positives at the farm and collection point were 2% and 3%, respectively. After transport and lairage 41% of cull sows yielded S. enterica in one or more sampled tissues. A significant increase in cecal isolations was observed. The two S. enterica serotypes found at the production site and collection point were found at the abattoir, as were 13 other serotypes. Transport and lairage practices may contribute to an increased S. enterica contamination immediately prior to slaughter.

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