Related Experiment Video
Updated: Jul 13, 2026
05:34
Detection and Isolation of Campylobacter spp. from Raw Meat
Published on: February 23, 2024
Campylobacter succession in broiler chickens
A El-Shibiny1, P L Connerton, I F Connerton
1Division of Food Sciences, School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK.
Veterinary Microbiology
|July 14, 2007
Summary
Campylobacter coli can outcompete Campylobacter jejuni in broiler chickens. This competitive advantage is influenced by the age of the chickens and the ratio of the bacterial inoculums, suggesting potential for population manipulation.
Area of Science:
- Veterinary Microbiology
- Poultry Science
- Bacterial Pathogenesis
Background:
- Campylobacter jejuni is a common intestinal colonizer in chickens.
- Campylobacter coli has been observed to replace C. jejuni in outdoor-reared commercial flocks.
- Understanding interspecies competition is crucial for controlling Campylobacter colonization.
Purpose of the Study:
- To investigate the competitive ability of Campylobacter coli OR12 against Campylobacter jejuni OR1 in broiler chickens.
- To determine the factors influencing the displacement of C. jejuni by C. coli in vivo.
- To explore the potential for competitive exclusion to manage Campylobacter populations in poultry.
Main Methods:
- In vitro co-culture experiments to assess growth rates and competitive interactions.
- In vivo colonization experiments in broiler chickens pre-colonized with C. jejuni.
- Experimental inoculation of C. coli at varying ages and inoculum ratios post-C. jejuni colonization.
Main Results:
- C. coli OR12 demonstrated competitive superiority over C. jejuni OR1 under specific conditions.
- Successful displacement of C. jejuni by C. coli occurred when chickens were older than 27 days at inoculation and administered over a 4-day period.
- C. coli OR12 also displaced three other C. jejuni strains from colonized chickens.
Conclusions:
- Campylobacter coli possesses a competitive advantage over Campylobacter jejuni in broiler chickens.
- Chicken age and inoculum ratio are critical factors in determining the outcome of Campylobacter interspecies competition.
- Competitive exclusion strategies hold promise for manipulating Campylobacter populations in poultry.
Related Concept Videos
01:18Bacterial Gastroenteritis
Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid receptor...
01:23Stringent Response in E. coli
Bacterial growth is closely tied to nutrient availability, with cells proliferating exponentially under favorable conditions and entering a stationary phase when resources become scarce. This transition is mediated by a regulatory mechanism known as the stringent response, which allows bacteria to adapt to nutrient deprivation by modulating gene expression and metabolic activity.During nutrient scarcity, intracellular amino acid levels decline. It results in the accumulation of uncharged tRNAs...