Epidemiology of salmonellosis in fattening units of Catalonia (Spain): A bacteriological survey

Mejía, W.; Zapata, D.; Martín, M.; Casal, Jordi Domènech; Mateu, Enric

doi:10.31274/safepork-180809-452

Cited by 1 publication

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“…According to the results reported by Mejía et al (2003) on swine farms in Catalonia and Astorga et al (2007) on Andalusian swine production units, S. Rissen, detected in 25% of the farms, was the second serovar isolated from Spanish swine fattening units. This serovar has also emerged since the year 2000 among Spanish human isolates of Salmonella and ranked 6th in importance in , being mostly associated with pork products (De Frutos et al, 2005).…”

Section: Discussionmentioning

confidence: 89%

“…es/es/estadistica/pags/anuario/introduction.htm). Although there was very little documentation on the true prevalence of Salmonella infection in Spanish swine herds at the time of the sampling, the limited available data on our country was used (Vidal et al, 2002;Mejía et al, 2003) and 35% was taken as the expected bacteriological prevalence of Salmonella-positive farms. It was calculated that, with a 95% CI and an absolute error of £7%, a total number of 179 farms would have to be sampled.…”

Section: Study Design Sample Size and Selection Of Herdsmentioning

confidence: 99%

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Salmonella enterica Infections in Spanish Swine Fattening Units

García-Feliz

Collazos

Carvajal

et al. 2007

Zoonoses and Public Health

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The present study is the first conducted in Spain to estimate the bacteriological herd prevalence of Salmonella enterica in fattening units and to describe the Salmonella serovar diversity on these farms using a sample representative of the entire swine population. For this purpose, 10 faecal samples were collected from 10 different pens containing pigs close to market weight in a total of 232 fattening units. Total sample size was proportionally distributed according to the fattener census in each of the regions of the country and all the samples were examined by culture of 25 g of faecal material. One hundred (43.1%) farms had at least one Salmonella-positive sample (95% CI: 37-49.1%). Salmonella enterica was detected in 290 (12.5%) pooled faecal floor samples (95% CI: 11.2-13.8%). The apparent herd prevalence of salmonellosis was similar among multi-site, finishing and farrow to finish farms. Overall, 24 different serovars were identified, with S. Typhimurium, S. Rissen and S. Derby being the most common both at herd and sample level. Results of phage typing were available for the 91 isolates of S. Typhimurium. A total number of 10 different phage types were identified, with DT 193 being the most frequent. Phage types DT 104, DT 104b and DT U302, which have been associated with several multi-resistant patterns, accounted for 23% and 29% of the Typhimurium total isolates or Typhimurium infected farms respectively.

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Section: Discussionmentioning

confidence: 89%

Section: Study Design Sample Size and Selection Of Herdsmentioning

confidence: 99%