NDLI: Sub-iliac lymph nodes at slaughter lack ability to predict Salmonella enterica prevalence for swine farms.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Wang, Bing Wesley, Irene V. McKean, James D. O'Connor, Annette M.
Spatial Coverage	United States
Description	Country affiliation: United States Author Affiliation: Wang B ( Department of Veterinary Diagnostic and Production Animal Medicine, College of Veterinary Medicine, Iowa State University, Ames, Iowa 50011, USA.)
Abstract	The aim of this study was to assess the value of deep systemic sub-iliac lymph nodes collected at slaughter as predictors of Salmonella prevalence in live hogs. An observational study was conducted on 24 farms from September 2006 to February 2009. At least one cohort of market-weight pigs was visited for each farm. Within each cohort, 30 farm fecal samples on farm and 30 sub-iliac lymph nodes from matched pigs at slaughter were collected. Samples were cultured for Salmonella enterica and serotyped by conventional methods. Overall, 3.4% (51 of 1490) of farm feces and 0.06% (1 of 1739) of sub-iliac lymph nodes were Salmonella positive; 71.4% (15 of 21) of farms had at least one positive fecal sample, and 4.2% (1 of 24) had at least one positive sub-iliac lymph node. The median within-farm prevalence of Salmonella in farm fecal samples was 1.7%, ranging from 0% to 38.3%; for sub-iliac lymph nodes the median was 0%, ranging from 0% to 1.1%. The median within-cohort prevalence in farm fecal samples was 0%, ranging from 0% to 43.3%; for sub-iliac lymph nodes the median was 0%, ranging from 0% to 4%. The predominant serotype detected was Derby, followed by Anatum and Typhimurium (Copenhagen). Salmonella Braenderup was recovered from the sub-iliac lymph node. The low detection rate of Salmonella in sub-iliac lymph nodes (0.06%) limits its usefulness as a dependable predictor of Salmonella contamination originating on farm (3.4%).
File Format	HTM / HTML
ISSN	15353141
Issue Number	7
Volume Number	7
e-ISSN	15567125
Journal	Foodborne Pathogens and Disease
Language	English
Publisher	Mary Ann Liebert, Inc.
Publisher Date	2010-07-01
Publisher Place	United States
Access Restriction	Subscribed
Subject Keyword	Discipline Microbiology Discipline Parasitology Discipline Nutritional Sciences Abdomen Lymph Nodes Microbiology Salmonella Infections, Animal Epidemiology Salmonella Enterica Isolation & Purification Swine Diseases Animal Husbandry Methods Animals Bacterial Shedding Cohort Studies Feces Meat-packing Industry Polymerase Chain Reaction Population Surveillance Prevalence Rectum Salmonella Food Poisoning Prevention & Control Classification Serotyping Veterinary Swine United States Comparative Study Journal Article Research Support, U.s. Gov't, Non-p.h.s.
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Microbiology Applied Microbiology and Biotechnology Food Science

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