Document Detail


Effect of separate transport, lairage, and slaughter on occurrence of Salmonella typhimurium on slaughter carcasses.
MedLine Citation:
PMID:  11570179     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The study aimed to reduce cross-contamination between finishers from Salmonella-positive and Salmonella-negative herds during transport, lairage, and slaughter, thereby reducing the prevalence of Salmonella Typhimurium on slaughter carcasses. In Phase 1 of the study, pigs from Salmonella-negative herds were kept in lairage for 2-4 hours either in clean pens (intervention group) or pens contaminated with Salmonella-infected faeces (control group). All pigs were slaughtered on the same slaughterline, and carcass swabs 24 hours after slaughter revealed a low degree of cross-contamination in the pens: there was no difference in Salmonella-positive carcasses between intervention (1.7%) and control groups (0.8%). In Phase 2, control pigs from Salmonella-negative herds were mixed with pigs from Salmonella-positive herds during lairage for 2-4 hours, while the intervention group still consisted of pigs from Salmonella-negative herds. All pigs were slaughtered on the same line: first intervention, then control. Carcass swabs taken 24 hours after slaughter failed to show a reduction in Salmonella-positive carcasses in the intervention group (4.5%) compared with the originally Salmonella-negative pigs in the control group (3.6%). In pigs from Salmonella-positive herds the occurrence of Salmonella was substantially higher at 10.4%. When the results were corrected for 6 carcass samples found positive with S. Heidelberg on the same day, which was attributed to a transient hygiene failure, only 2.2% of the carcasses in the intervention group were Salmonella-positive. We conclude that even though cross-contamination occurs in the abattoir pens, its importance on the slaughter line may be greater. However, the final results of this study should be awaited to conclude whether separate slaughter of pigs from Salmonella-positive and Salmonella-negative herds should be recommended.
Authors:
J Boes; J Dahl; B Nielsen; H H Krog
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Berliner und Münchener tierärztliche Wochenschrift     Volume:  114     ISSN:  0005-9366     ISO Abbreviation:  Berl. Munch. Tierarztl. Wochenschr.     Publication Date:    2001 Sep-Oct
Date Detail:
Created Date:  2001-09-25     Completed Date:  2002-01-31     Revised Date:  2003-11-14    
Medline Journal Info:
Nlm Unique ID:  0003163     Medline TA:  Berl Munch Tierarztl Wochenschr     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  363-5     Citation Subset:  IM    
Affiliation:
Veterinary and Food Advisory Service, Danish Bacon & Meat Council, Axelborg, Axeltorv 3, DK-1609 Copenhagen, Denmark. jbo@danishmeat.dk
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MeSH Terms
Descriptor/Qualifier:
Abattoirs
Animals
Food Contamination / prevention & control
Food Handling / methods*
Meat / microbiology*
Prevalence
Risk Factors
Salmonella Infections, Animal / epidemiology*,  etiology,  microbiology
Salmonella typhimurium / isolation & purification*
Swine
Swine Diseases / epidemiology*,  etiology,  microbiology
Transportation

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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