The role of transport, lairage and slaughter processes in the dissemination of Salmonella spp. in pigs in Ireland

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

“…However, further data would be necessary, in order to establish the status of Salmonella carrier at farm level and thus determine the role of transport. Our results on Salmonella occurrence in pig samples are in accordance with other studies that observed a prevalence between 12% and 22% in colon content (Mannion and others ; Bonardi and others ; Hérnandez and others ), 10% and 15% in mesenteric lymph nodes (Visscher and others ; Mannion and others ; Alpigiani and others ) and 7% and 16.2% in carcass surface (Pearce and others ; Gomes‐Neves and others ). To our knowledge, no recent data are available about Salmonella occurrence on liver surface.…”

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

“…Raúl et al (2008), found a higher caecal contents prevalence in the higher throughput slaughterhouse and hypothesised that the reason likely to explain this was a higher level of contamination in the lairage pen due to a larger number of animals slaughtered every day or perhaps the slaughter of pigs from larger farms. A contaminated lymph node sample could also come from a pig that came into contact with another contaminated pig or pen shortly prior to slaughter but also from cross contamination during sample collection (Kirchner et al, 2011;Mannion et al, 2012;Boughton et al, 2007;Hurd et al, 2001). More information on the length of time spent in lairage and on the effectiveness of the cleaning protocol which could be lower than expected as observed in a Spanish study (Arguello et al, 2012) would be needed to confirm such effect.…”

“…Nevertheless, although results from different studies varied, all suggested some level of variation between hygiene standards, which may have an effect on the carcass' Salmonella status. Furthermore, studies have found it possible to lower carcass contamination with good slaughter practices, suggesting that a control programme at abattoir level may be promising (Letellier et al, 2009;Mannion et al, 2012).…”

Suitability of a Salmonella control programme based on serology in slaughter heavy pigs

“…Many authors analyzed the relation between bacteriologically and serologically positive slaughter pigs and only observed a weak concordance, and that lowering the cut-off value did not necessarily result in higher compliance (Mannion et al, 2012;Visscher et al, 2011). Different studies demonstrated that the antibody response in fattening pigs depends on different factors such as the time course of infection (e.g.…”