A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004
Abstract Background Following increased rates of human campylobacteriosis in the late 1990's, and their apparent association with increased consumption of fresh chicken meat, a longitudinal study was conducted in Iceland to identify the means to decrease the frequency of broiler flock colonizat...
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ftdoajarticles:oai:doaj.org/article:de0b20bcb0a24198902ed419705a2f76 2023-05-15T16:49:40+02:00 A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 Berke Olaf Reiersen Jarle Martin Wayne Guerin Michele T McEwen Scott A Bisaillon John-Robert Lowman Ruff 2007-07-01T00:00:00Z https://doi.org/10.1186/1751-0147-49-18 https://doaj.org/article/de0b20bcb0a24198902ed419705a2f76 EN eng BMC http://www.actavetscand.com/content/49/1/18 https://doaj.org/toc/1751-0147 doi:10.1186/1751-0147-49-18 1751-0147 https://doaj.org/article/de0b20bcb0a24198902ed419705a2f76 Acta Veterinaria Scandinavica, Vol 49, Iss 1, p 18 (2007) Veterinary medicine SF600-1100 article 2007 ftdoajarticles https://doi.org/10.1186/1751-0147-49-18 2022-12-30T22:14:33Z Abstract Background Following increased rates of human campylobacteriosis in the late 1990's, and their apparent association with increased consumption of fresh chicken meat, a longitudinal study was conducted in Iceland to identify the means to decrease the frequency of broiler flock colonization with Campylobacter . Our objective in this study was to identify risk factors for flock colonization acting at the broiler farm level. Methods Between May 2001 and September 2004, pooled caecal samples were obtained from 1,425 flocks at slaughter and cultured for Campylobacter . Due to the strong seasonal variation in flock prevalence, analyses were restricted to a subset of 792 flocks raised during the four summer seasons. Flock results were collapsed to the farm level, such that the number of positive flocks and the total number of flocks raised were summed for each farm. Logistic regression models were fitted to the data using automated and manual selection methods. Variables of interest included manure management, water source and treatment, other poultry/livestock on farm, and farm size and management. Results The 792 flocks raised during the summer seasons originated from 83 houses on 33 farms, and of these, 217 (27.4%) tested positive. The median number of flocks per farm was 14, and the median number of positive flocks per farm was three. Three farms did not have any positive flocks. In general, factors associated with an increased risk of Campylobacter were increasing median flock size on the farm (p ≤ 0.001), spreading manure on the farm (p = 0.004 to 0.035), and increasing the number of broiler houses on the farm (p = 0.008 to 0.038). Protective factors included the use of official (municipal) (p = 0.004 to 0.051) or official treated (p = 0.006 to 0.032) water compared to the use of non-official untreated water, storing manure on the farm (p = 0.025 to 0.029), and the presence of other domestic livestock on the farm (p = 0.004 to 0.028). Conclusion Limiting the average flock size, and limiting the number of ... Article in Journal/Newspaper Iceland Directory of Open Access Journals: DOAJ Articles Slaughter ENVELOPE(-85.633,-85.633,-78.617,-78.617) Acta Veterinaria Scandinavica 49 1 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Veterinary medicine SF600-1100 |
spellingShingle |
Veterinary medicine SF600-1100 Berke Olaf Reiersen Jarle Martin Wayne Guerin Michele T McEwen Scott A Bisaillon John-Robert Lowman Ruff A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 |
topic_facet |
Veterinary medicine SF600-1100 |
description |
Abstract Background Following increased rates of human campylobacteriosis in the late 1990's, and their apparent association with increased consumption of fresh chicken meat, a longitudinal study was conducted in Iceland to identify the means to decrease the frequency of broiler flock colonization with Campylobacter . Our objective in this study was to identify risk factors for flock colonization acting at the broiler farm level. Methods Between May 2001 and September 2004, pooled caecal samples were obtained from 1,425 flocks at slaughter and cultured for Campylobacter . Due to the strong seasonal variation in flock prevalence, analyses were restricted to a subset of 792 flocks raised during the four summer seasons. Flock results were collapsed to the farm level, such that the number of positive flocks and the total number of flocks raised were summed for each farm. Logistic regression models were fitted to the data using automated and manual selection methods. Variables of interest included manure management, water source and treatment, other poultry/livestock on farm, and farm size and management. Results The 792 flocks raised during the summer seasons originated from 83 houses on 33 farms, and of these, 217 (27.4%) tested positive. The median number of flocks per farm was 14, and the median number of positive flocks per farm was three. Three farms did not have any positive flocks. In general, factors associated with an increased risk of Campylobacter were increasing median flock size on the farm (p ≤ 0.001), spreading manure on the farm (p = 0.004 to 0.035), and increasing the number of broiler houses on the farm (p = 0.008 to 0.038). Protective factors included the use of official (municipal) (p = 0.004 to 0.051) or official treated (p = 0.006 to 0.032) water compared to the use of non-official untreated water, storing manure on the farm (p = 0.025 to 0.029), and the presence of other domestic livestock on the farm (p = 0.004 to 0.028). Conclusion Limiting the average flock size, and limiting the number of ... |
format |
Article in Journal/Newspaper |
author |
Berke Olaf Reiersen Jarle Martin Wayne Guerin Michele T McEwen Scott A Bisaillon John-Robert Lowman Ruff |
author_facet |
Berke Olaf Reiersen Jarle Martin Wayne Guerin Michele T McEwen Scott A Bisaillon John-Robert Lowman Ruff |
author_sort |
Berke Olaf |
title |
A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 |
title_short |
A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 |
title_full |
A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 |
title_fullStr |
A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 |
title_full_unstemmed |
A farm-level study of risk factors associated with the colonization of broiler flocks with Campylobacter spp. in Iceland, 2001 – 2004 |
title_sort |
farm-level study of risk factors associated with the colonization of broiler flocks with campylobacter spp. in iceland, 2001 – 2004 |
publisher |
BMC |
publishDate |
2007 |
url |
https://doi.org/10.1186/1751-0147-49-18 https://doaj.org/article/de0b20bcb0a24198902ed419705a2f76 |
long_lat |
ENVELOPE(-85.633,-85.633,-78.617,-78.617) |
geographic |
Slaughter |
geographic_facet |
Slaughter |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Acta Veterinaria Scandinavica, Vol 49, Iss 1, p 18 (2007) |
op_relation |
http://www.actavetscand.com/content/49/1/18 https://doaj.org/toc/1751-0147 doi:10.1186/1751-0147-49-18 1751-0147 https://doaj.org/article/de0b20bcb0a24198902ed419705a2f76 |
op_doi |
https://doi.org/10.1186/1751-0147-49-18 |
container_title |
Acta Veterinaria Scandinavica |
container_volume |
49 |
container_issue |
1 |
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1766039838488788992 |