Abattoir based survey of Salmonella in finishing pigs in the United Kingdom 2006–2007

Marier, E.; Snow, L. C.; Floyd, T.; McLaren, I.; Bianchini, Juana; Cook, A. J. C.; Davies, Robert

doi:10.1016/j.prevetmed.2014.09.004

Cited by 27 publications

(37 citation statements)

References 36 publications

(50 reference statements)

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“…Serotypes Typhimurium, Mbandaka, Panama, Derby, and Agona were the most prevalent, similar to those observed in another study conducted in the southern region of Brazil (Kich, Coldebella, Morés, Nogueira, Cardoso, Fratamico, Call, Fedorka-Cray, and Luchansky [22]. S. Typhimurium was the most common serotype isolated in both farms and slaughterhouses ( Table 2); this serotype has already been described as the most frequent in pig production worldwide [28][29][30][31], and is most associated with human salmonellosis outbreaks in the European Union [18,19]. The isolates obtained from feces showed the highest serotype diversity, mainly those from piglet production and pig finishing farms (data not shown).…”

Section: Resultssupporting

confidence: 84%

Prevalence, Antimicrobial Resistance, and Diversity of Salmonella along the Pig Production Chain in Southern Brazil

et al. 2019

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Control of Salmonella spp. in food production chains is very important to ensure safe foods and minimize the risks of foodborne disease occurrence. This study aimed to identify the prevalence and main contamination sources of Salmonella spp. in a pig production chain in southern Brazil. Six lots of piglets produced at different farms were tracked until their slaughter, and samples were subjected to Salmonella spp. detection. The obtained isolates were serotyped, subjected to antimicrobial resistance testing, and pulsed field gel electrophoresis (PFGE). Salmonella spp. was detected in 160 (10.2%) samples, and not detected in pig carcasses after final washing or chilling. Among the 210 Salmonella spp. isolates, S. Typhimurium was the most prevalent (n = 101) and resistant to at least one antimicrobial. High resistance rates were detected against tetracycline (83.8%), chloramphenicol (54.3%), and trimethoprim-sulfamethoxazole (33.3%). The isolates that were non-susceptible to three or more classes of antimicrobials (n = 60) were considered multidrug-resistant (MDR), and isolates resistant to up to six of the tested antimicrobials were found. PFGE allowed the identification of genetic diversity and demonstrated that farm environment and feed supply may be sources for the dissemination of Salmonella spp. along the production chain. The results revealed the sources of Salmonella contamination in the pig production chain and highlighted the risks of antimicrobial resistance spread.

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Section: Resultssupporting

confidence: 84%

Prevalence, Antimicrobial Resistance, and Diversity of Salmonella along the Pig Production Chain in Southern Brazil

et al. 2019

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“…However, the sampled population included 9% of pigs aged >12 months which was greater than the proportion of culled sows against all pigs slaughtered in 2014 (243 000 culled sows among 10 227 000 total slaughtered; [23]. This difference in population [8,12,24]. None of these surveys found a significant seasonal variation in carriage, so it is unlikely that the shorter period of sampling in this study had a significant effect.…”

Section: Discussionmentioning

confidence: 97%

A prevalence study ofSalmonellaspp.,Yersiniaspp.,Toxoplasma gondiiand porcine reproductive and respiratory syndrome virus in UK pigs at slaughter

et al. 2015

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An abattoir-based study was undertaken between January and May 2013 to estimate the prevalence of Salmonella spp. and Yersinia spp. carriage and seroprevalence of antibodies to Toxoplasma gondii and porcine reproductive and respiratory syndrome virus (PRRSv) in UK pigs at slaughter. In total, 626 pigs were sampled at 14 abattoirs that together process 80% of the annual UK pig slaughter throughput. Sampling was weighted by abattoir throughput and sampling dates and pig carcasses were randomly selected. Rectal swabs, blood samples, carcass swabs and the whole caecum, tonsils, heart and tongue were collected. Salmonella spp. was isolated from 30·5% [95% confidence interval (CI) 26·5-34·6] of caecal content samples but only 9·6% (95% CI 7·3-11·9) of carcass swabs, which was significantly lower than in a UK survey in 2006-2007. S. Typhimurium and S. 4,[5],12:i:- were the most commonly isolated serovars, followed by S. Derby and S. Bovismorbificans. The prevalence of Yersinia enterocolitica carriage in tonsils was 28·7% (95% CI 24·8-32·7) whereas carcass contamination was much lower at 1·8% (95% CI 0·7-2·8). The seroprevalence of antibodies to Toxoplasma gondii and PRRSv was 7·4% (95% CI 5·3-9·5) and 58·3% (95% CI 53·1-63·4), respectively. This study provides a comparison to previous abattoir-based prevalence surveys for Salmonella and Yersinia, and the first UK-wide seroprevalence estimates for antibodies to Toxoplasma and PRRSv in pigs at slaughter.

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“…A number of studies found a significant association between positive caecal content and contaminated carcass (Botteldoorn and others ; Sorensen and others ; McDowell and others ). Marier and others () stated that pigs positive for Salmonella in their caecal samples were twice as likely to have a positive carcass swab as compared to negative ones. In addition, several authors (Vieira‐Pinto and others ; De Busser and others ; Gomes‐Neves and others ) suggested a correlation between lymph‐nodes carrier pigs and carcass and meat contamination.…”

Section: Discussionmentioning

confidence: 99%

Occurrence, Characterization, and Antimicrobial Susceptibility of Salmonella enterica in Slaughtered Pigs in Sardinia

Fois

Piras

Torpdahl

et al. 2017

Journal of Food Science

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The aim of this study was to determine Salmonella occurrence in slaughtered finishing pigs and piglets and in slaughterhouse environment in order to characterize the isolates with phenotypical (antimicrobial testing) and molecular (PFGE, MLVA) methods. Nine slaughterhouses located in Sardinia were visited. Six hundred and eight samples collected from 106 pigs and 108 environmental samples were collected and analyzed. Salmonella was isolated in 65 of 504 (12.9%) samples from finishing pigs, with an occurrence of 15.1% in colon content, 12.7% in lymph nodes and liver, and 11.1% in carcass surface samples. Salmonella was never detected in piglets. The combined results of serotyping and PFGE showed a possible self-contamination in 71.5% of Salmonella positive carcasses of lymph nodes and/or colon content carriers, pointing out the role of healthy pigs for carcass contamination. A significantly higher (P < 0.05) occurrence was detected in finishing pigs of EC countries origin (23%) than in pigs of local farms (8%). Salmonella was also detected in 3.7% of environmental samples. The most prevalent serovar was S. Anatum, followed by S. Rissen, S. Derby, and monophasic S. Typhimurium. Resistance to at least 3 antimicrobial was observed in 97.1% of strains and 7 different patterns of multiple resistance were identified. The most common resistance was detected against sulphonamide compounds. A strict slaughterhouse application of hygiene standards is essential to control the risk of Salmonella contamination.

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Abattoir based survey of Salmonella in finishing pigs in the United Kingdom 2006–2007

Cited by 27 publications

References 36 publications

Prevalence, Antimicrobial Resistance, and Diversity of Salmonella along the Pig Production Chain in Southern Brazil

Prevalence, Antimicrobial Resistance, and Diversity of Salmonella along the Pig Production Chain in Southern Brazil

A prevalence study ofSalmonellaspp.,Yersiniaspp.,Toxoplasma gondiiand porcine reproductive and respiratory syndrome virus in UK pigs at slaughter

Occurrence, Characterization, and Antimicrobial Susceptibility of Salmonella enterica in Slaughtered Pigs in Sardinia

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