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Faecal sampling underestimates the actual prevalence of Salmonella in laying hen flocks

Sebastiaan Van Hoorebeke UGent, Filip Van Immerseel UGent, Jantina De Vylder UGent, Richard Ducatelle UGent, Freddy Haesebrouck UGent, Frank Pasmans UGent, Aart de Kruif UGent and Jeroen Dewulf UGent (2009) ZOONOSES AND PUBLIC HEALTH. 56(8). p.471-476
abstract
In all European Union member states, Salmonella monitoring in poultry flocks is obligatory. In these monitoring programmes, a limited number of pooled faeces and/or dust samples are collected to determine whether Salmonella is present in the flocks or not. Whether these limited sampling protocols are sufficiently sensitive to detect expected low within-flock prevalences of an intermittently shed pathogen is not yet clear. In this study, a comparison is made between different sampling procedures for the assessment of the between- and within-flock prevalence of Salmonella in laying hens. In total, 19 farms were sampled. Using a comparable sampling methodology as in the official surveillance programmes, Salmonella could not be detected in any of the flocks. After transportation of the hens to the laboratory and subsequent analysis of cloacal swabs and caecal contents, Salmonella Enteritidis was detected in laying hens from five of 19 farms. The observed within-flock prevalence ranged from 1% to 14%. Based on the results of this study, it can be expected that, depending on the sampling procedure, different estimates of the prevalence of Salmonella can be obtained and the proportion of Salmonella infected flocks is underestimated based on the results of the official monitoring programme.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
laying hens, Salmonella, sampling, prevalence, ENTERICA SEROVAR ENTERITIDIS, LAYER FLOCKS, RISK-FACTORS, CONTAMINATION, CHICKENS, EGGS, POULTRY, MANAGEMENT, OUTBREAKS, BROILER
journal title
ZOONOSES AND PUBLIC HEALTH
Zoonoses Public Health
volume
56
issue
8
pages
471 - 476
Web of Science type
Article
Web of Science id
000269542500004
JCR category
VETERINARY SCIENCES
JCR impact factor
1.912 (2009)
JCR rank
16/141 (2009)
JCR quartile
1 (2009)
ISSN
1863-1959
DOI
10.1111/j.1863-2378.2008.01211.x
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
628208
handle
http://hdl.handle.net/1854/LU-628208
date created
2009-05-14 17:01:21
date last changed
2012-10-29 15:00:05
@article{628208,
  abstract     = {In all European Union member states, Salmonella monitoring in poultry flocks is obligatory. In these monitoring programmes, a limited number of pooled faeces and/or dust samples are collected to determine whether Salmonella is present in the flocks or not. Whether these limited sampling protocols are sufficiently sensitive to detect expected low within-flock prevalences of an intermittently shed pathogen is not yet clear. In this study, a comparison is made between different sampling procedures for the assessment of the between- and within-flock prevalence of Salmonella in laying hens. In total, 19 farms were sampled. Using a comparable sampling methodology as in the official surveillance programmes, Salmonella could not be detected in any of the flocks. After transportation of the hens to the laboratory and subsequent analysis of cloacal swabs and caecal contents, Salmonella Enteritidis was detected in laying hens from five of 19 farms. The observed within-flock prevalence ranged from 1\% to 14\%. Based on the results of this study, it can be expected that, depending on the sampling procedure, different estimates of the prevalence of Salmonella can be obtained and the proportion of Salmonella infected flocks is underestimated based on the results of the official monitoring programme.},
  author       = {Van Hoorebeke, Sebastiaan and Van Immerseel, Filip and De Vylder, Jantina and Ducatelle, Richard and Haesebrouck, Freddy and Pasmans, Frank and de Kruif, Aart and Dewulf, Jeroen},
  issn         = {1863-1959},
  journal      = {ZOONOSES AND PUBLIC HEALTH},
  keyword      = {laying hens,Salmonella,sampling,prevalence,ENTERICA SEROVAR ENTERITIDIS,LAYER FLOCKS,RISK-FACTORS,CONTAMINATION,CHICKENS,EGGS,POULTRY,MANAGEMENT,OUTBREAKS,BROILER},
  language     = {eng},
  number       = {8},
  pages        = {471--476},
  title        = {Faecal sampling underestimates the actual prevalence of Salmonella in laying hen flocks},
  url          = {http://dx.doi.org/10.1111/j.1863-2378.2008.01211.x},
  volume       = {56},
  year         = {2009},
}

Chicago
Van Hoorebeke, Sebastiaan, Filip Van Immerseel, Jantina De Vylder, Richard Ducatelle, Freddy Haesebrouck, Frank Pasmans, Aart de Kruif, and Jeroen Dewulf. 2009. “Faecal Sampling Underestimates the Actual Prevalence of Salmonella in Laying Hen Flocks.” Zoonoses and Public Health 56 (8): 471–476.
APA
Van Hoorebeke, S., Van Immerseel, F., De Vylder, J., Ducatelle, R., Haesebrouck, F., Pasmans, F., de Kruif, A., et al. (2009). Faecal sampling underestimates the actual prevalence of Salmonella in laying hen flocks. ZOONOSES AND PUBLIC HEALTH, 56(8), 471–476.
Vancouver
1.
Van Hoorebeke S, Van Immerseel F, De Vylder J, Ducatelle R, Haesebrouck F, Pasmans F, et al. Faecal sampling underestimates the actual prevalence of Salmonella in laying hen flocks. ZOONOSES AND PUBLIC HEALTH. 2009;56(8):471–6.
MLA
Van Hoorebeke, Sebastiaan, Filip Van Immerseel, Jantina De Vylder, et al. “Faecal Sampling Underestimates the Actual Prevalence of Salmonella in Laying Hen Flocks.” ZOONOSES AND PUBLIC HEALTH 56.8 (2009): 471–476. Print.