Microbial ecology of Campylobacter jejuni in a United Kingdom chicken supply chain: intermittent common source, vertical transmission, and amplification by flock propagation

  title={Microbial ecology of Campylobacter jejuni in a United Kingdom chicken supply chain: intermittent common source, vertical transmission, and amplification by flock propagation},
  author={Andrew D. Pearson and Melody Greenwood and R. K. A. Feltham and Timothy D. Healing and J Donaldson and D. M. Jones and Rita R. Colwell},
  journal={Applied and Environmental Microbiology},
  pages={4614 - 4620}
A study of Campylobacter jejuni on a broiler chicken farm between 1989 and 1994 gave an estimated isolation rate of 27% (3,304 of 12,233) from a 0.9% sample of 1.44 million broiler chickens from six to eight sheds over 32 consecutive rearing flocks comprising 251 broiler shed flocks. During the study, C. jejuni was found in 35.5% of the 251 shed flocks but only 9.2% (23 of 251) had Campylobacter isolates in successive flocks, with 9 of those 23 sheds having the same serotype between consecutive… 

Distribution of Campylobacter spp. in selected U.S. poultry production and processing operations.

In the majority of flocks, sampled every 2 weeks throughout production, Campylobacter-positive fecal and cecal samples were not detected until 4 to 8 weeks of age, and in only six of the flocks were environmental samples found to be positive before shedding of Campyloblacter was detected in the birds.

Identification of a New Source of Campylobacter Contamination in Poultry: Transmission from Breeder Hens to Broiler Chickens

It is demonstrated that Campylobacter isolates from commercial broiler breeder flocks and from the respective broiler progeny may be of clonal origin and that breeder hens can serve as a source for Campyobacter contamination in poultry flocks.

Detection of Campylobacter jejuni Strains in the Water Lines of a Commercial Broiler House and Their Relationship to the Strains That Colonized the Chickens

The results suggest that although the watering system is a potential source of C. jejuni in broiler flocks, the waterborne strain in this study was not detected in the birds.

Campylobacter infections in four poultry species in respect of frequency, onset of infection and seasonality.

Flocks of all species housed during the summer months featured a higher prevalence of Campylobacter colonisation than those housed in winter, which was statistically significant for broilers and for Pekin ducks.

Lack of Evidence for Vertical Transmission of Campylobacter spp. in Chickens

No evidence for vertical transmission of Campylobacter to the approximately 60,000 progeny parent breeders that were hatched from eggs coming from Campyloblacter-positive grandparent flocks is found, suggesting that chicken flocks contaminated with C. jejuni are not a significant source for the contamination of chicken flock populations.

Thermophilic Campylobacter spp. in Danish broiler production: A cross-sectional survey and a retrospective analysis of risk factors for occurrence in broiler flocks

In order to elucidate the rate of thermophilic Campylobacter spp. carriage in Danish broiler production and to identify risk factors for occurrence of campylobacter in broiler flocks, a total of 88

Molecular Epidemiology of Campylobacter Isolates from Poultry Production Units in Southern Ireland

Results obtained suggest that no evidence of vertical transmission existed and that adequate cleaning/disinfection of broiler houses contributed to the prevention of carryover and cross-contamination, and the environment appears to be a potential source of Campylobacter.

Evidence that Certain Clones ofCampylobacter jejuni Persist during Successive Broiler Flock Rotations

The MRPs of clones belonging tofla type 1/1 serotype O:2 isolated from persistently infected flocks shared a high percentage of bands compared to the remaining isolates, indicating that some clones that have the ability to cause persistent infections in broiler farms are highly related to each other.



Study on the epidemiology and control of Campylobacter jejuni in poultry broiler flocks

Application of measures to control horizontal transmission of C. jejuni on farm B was successful and infection of the flocks from a common source via horizontal pathways is suspected, while a vertical route of infection is not likely to exist.

Campylobacter jejuni Infection on Poultry Farms and its Effect on Poultry Meat Contamination during Slaughtering.

Lack of effective sanitation at the end of the day contributed to the contamination of meat from Campylobacter -free birds processed the next day.

Colonization of broiler chickens by waterborne Campylobacter jejuni

An intervention program based on water chlorination, shed drinking system cleaning and disinfection, and withdrawal of furazolidone from feed reduced the proportion of birds colonized with campylobacter from 81 to 7% and was associated with a 1,000- to 10,000% reduction incampylobacters recoverable from the carcasses.

Epidemiology of Campylobacter spp. at two Dutch broiler farms

Broiler flocks on two Dutch poultry farms were screened weekly for the presence of Campylobacter in fresh caecal droppings during eight consecutive production cycles, and results certainly point towards horizontal transmission from the environment.

Horizontal transmission of Campylobacter jejuni amongst broiler chicks: experimental studies

Horizontal transmission of Campylobacter jejuni was investigated in campylobactor–free broiler chicks and colonization was rapid, but treatment of 1–day–old chicks with adult caecal microbiota did not affect colonization.

Campylobacter jejuni and Campylobacter coli serotypes isolated from chickens, cattle, and pigs

A total of 191 Campylobacter jejuni and 125 C. coli were isolated from the intestinal content of 398 chickens, 421 cattle, and 203 pigs, and Serotype 8, a relatively common human isolate, was not recovered.

The colonization of broiler chickens with Campylobacter jejuni: some epidemiological investigations

Prevalence of campylobacter-colonization was not associated with any of a variety of factors such as water source and broiler house floor structure and there was no apparent seasonal variation in carriage.

The significance of Campylobacter jejuni infection in poultry: a review.

  • S. Shane
  • Biology, Medicine
    Avian pathology : journal of the W.V.P.A
  • 1992
Improvement in washing of carcasses, and the application of chemical disinfectants and gamma irradiation have the potential to reduce the prevalence of C. jejuni contamination in poultry meat, which will reduce the risk of campylobacteriosis to consumers.

Epidemiological investigation of risk factors for Campylobacter colonization in Norwegian broiler flocks

The results indicate that disinfection of drinking water is the preventive measure most likely to have the greatest impact on the prevalence of campylobacter among broiler chicken flocks in the study area.

Campylobacter jejuni diarrhea model in infant chickens

The results obtained in this highly reproducible chicken diarrhea model indicate that most chickens develop nonexudative watery diarrhea 2 to 5 days after oral feeding of 10(3) to 10(6) live cells of C. jejuni, and the organism multiples in all parts of a chicken intestine, systemic invasion is common, and local invasion is sometimes observed.