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Type of publication: Journal Article
Type of document: Full Paper

Year: 2016

Authors: Paudel, S; Stessl, B; Hess, C; Zloch, A; Hess, M

Title: High genetic diversity among extraintestinal Escherichia coli isolates in pullets and layers revealed by a longitudinal study.

Source: BMC Vet Res. 2016; 12(1):221

Authors Vetmeduni Vienna:

Hess Claudia
Hess Michael
Paudel Surya
Stessl Beatrix
Zloch Angelika

Vetmed Research Units
University Clinic for Poultry and Fish Medicine, Clinical Unit of Poultry Medicine
Institute of Food Safety, Food Technology and Veterinary Public Health, Unit of Food Microbiology

Various information about the genetic diversity of Escherichia coli isolates from chickens are available but a detailed epidemiological investigation based upon isolates obtained from interrelated pullet and layer flocks is still missing. Therefore, in the course of a longitudinal epidemiological study on pullets and layers, 144 E. coli isolates from chickens with or without pathological lesions of the reproductive tract were serotyped and genotyped with pulsed-field gel electrophoresis (PFGE). These isolates were collected during rearing, peak and at the end of production. The actual study is the first of its kind so as to elucidate genetic relatedness among extraintestinal E. coli isolated from chickens with varying pathological conditions in interrelated layer farms/flocks at different stages of rearing.

Keywords Pubmed: Aging
Escherichia coli/genetics*
Escherichia coli Infections/epidemiology
Escherichia coli Infections/microbiology
Escherichia coli Infections/veterinary*
Genetic Variation*
Longitudinal Studies
Poultry Diseases/epidemiology
Poultry Diseases/microbiology*

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