scholarly journals On-farm Campylobacter and Escherichia coli in commercial broiler chickens: Re-used bedding does not influence Campylobacter emergence and levels across sequential farming cycles

2016 ◽  
Vol 95 (5) ◽  
pp. 1105-1115 ◽  
Author(s):  
H.N. Chinivasagam ◽  
W. Estella ◽  
H. Rodrigues ◽  
D.G. Mayer ◽  
C. Weyand ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Commercial Broiler ◽  
On Farm

scholarly journals Impact of On-Farm Interventions against CTX-Resistant Escherichia coli on the Contamination of Carcasses before and during an Experimental Slaughter

Antibiotics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 228
Author(s):  
Michaela Projahn ◽  
Jana Sachsenroeder ◽  
Guido Correia-Carreira ◽  
Evelyne Becker ◽  
Annett Martin ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Stocking Density ◽  
Resistant Bacteria ◽  
Control Group ◽  
Cross Contamination ◽  
High Prevalence ◽  
On Farm ◽  
The Impact ◽  
Slow Growing

Cefotaxime (CTX)-resistant Enterobacteriaceae are still an ongoing challenge in human and veterinary health. High prevalence of these resistant bacteria is detected in broiler chickens and the prevention of their dissemination along the production pyramid is of major concern. The impact of certain on-farm interventions on the external bacterial contamination of broiler chickens, as well as their influence on single processing steps and (cross-) contamination, have not yet been evaluated. Therefore, we investigated breast skin swab samples of broiler chickens before and during slaughter at an experimental slaughter facility. Broiler chickens were previously challenged with CTX-resistant Escherichia coli strains in a seeder-bird model and subjected to none (control group (CG)) or four different on-farm interventions: drinking water supplementation based on organic acids (DW), slow growing breed Rowan × Ranger (RR), reduced stocking density (25 kg/sqm) and competitive exclusion with Enterobacteriales strain IHIT36098(CE). Chickens of RR, 25 kg/sqm, and CE showed significant reductions of the external contamination compared to CG. The evaluation of a visual scoring system indicated that wet and dirty broiler chickens are more likely a vehicle for the dissemination of CTX-resistant and total Enterobacteriaceae into the slaughterhouses and contribute to higher rates of (cross-) contamination during processing.

scholarly journals Pathogenicity of Escherichia coli O125 in commercial broiler chickens

2019 ◽  
Vol 26 (1) ◽  
pp. 1-8
Author(s):  
Asmaa Abd Elatiff ◽  
Azza A. El-Sawah ◽  
Mohamed M. Amer ◽  
Al-Hussein M. Dahshan ◽  
Hala Salam ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Commercial Broiler

scholarly journals Pathogenicity of Escherichia coli O157 in commercial broiler chickens

2018 ◽  
Vol 7 (4) ◽  
pp. 620-625 ◽  
Author(s):  
Azza A. EL-Sawah ◽  
AL Hussien M. Dahshan ◽  
El-Shaymaa El-Nahass ◽  
A.I. Abd El-Mawgoud
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Escherichia Coli O157 ◽  
Commercial Broiler

Comparison of an Automated Most-Probable-Number Technique with Traditional Plating Methods for Estimating Populations of Total Aerobes, Coliforms, and Escherichia coli Associated with Freshly Processed Broiler Chickens

2011 ◽  
Vol 74 (9) ◽  
pp. 1558-1563 ◽  
Author(s):  
J. E. LINE ◽  
N. J. STERN ◽  
B. B. OAKLEY ◽  
B. S. SEAL
Keyword(s):  
Escherichia Coli ◽  
Correlation Coefficient ◽  
Broiler Chickens ◽  
Limit Of Detection ◽  
Viable Count ◽  
Drip Line ◽  
Most Probable Number ◽  
Bacterial Populations ◽  
Probable Number ◽  
Commercial Broiler

An instrument (TEMPO) has been developed to automate the most-probable-number (MPN) technique and reduce the effort required to estimate some bacterial populations. We compared the automated MPN technique with traditional microbiological plating methods and Petrifilm methods for estimating the total viable count of aerobic microorganisms (TVC), total coliforms (CC), and Escherichia coli populations (EC) on freshly processed broiler chicken carcasses (postchill whole carcass rinse [WCR] samples) and cumulative drip-line samples from a commercial broiler processing facility. Overall, 120 broiler carcasses, 36 prechill drip-line samples, and 40 postchill drip-line samples were collected over 5 days (representing five individual flocks) and analyzed by the automated MPN and direct agar plating and Petrifilm methods. The TVC correlation coefficient between the automated MPN and traditional methods was very high (0.972) for the prechill drip samples, which had mean log-transformed values of 3.09 and 3.02, respectively. The TVC correlation coefficient was lower (0.710) for the postchill WCR samples, which had lower mean log values of 1.53 and 1.31, respectively. Correlations between the methods for the prechill CC and EC samples were 0.812 and 0.880, respectively. The estimated number of total aerobes was generally greater than the total number of coliforms or E. coli recovered for all sample types (P < 2e−16). Significantly more bacteria were recovered from the prechill samples than from the postchill WCR or cumulative drip samples (P < 9.5e−12 and P < 2e−16, respectively). When samples below the limit of detection were excluded, 92.1% of the total responses were within a single log difference between the traditional plating or Petrifilm methods and the automated MPN method.

scholarly journals Infectious bronchitis associated with Escherichia coli infection in commercial broiler chickens: a case report

2021 ◽  
Vol 8 (1) ◽  
pp. 1
Author(s):  
Norhanizam Nordin ◽  
Nani Sani ◽  
Arifah Kadir ◽  
Rumaizi Shaari ◽  
Maizan Mohamed ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Case Report ◽  
Broiler Chickens ◽  
Infectious Bronchitis ◽  
Commercial Broiler ◽  
Escherichia Coli Infection

scholarly journals Multiple Antimicrobial Resistance ofEscherichia coliIsolated from Chickens in Iran

2014 ◽  
Vol 2014 ◽  
pp. 1-4 ◽  
Author(s):  
Reza Talebiyan ◽  
Mehdi Kheradmand ◽  
Faham Khamesipour ◽  
Mohammad Rabiee-Faradonbeh
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Antimicrobial Agents ◽  
Diffusion Method ◽  
Multiple Drug ◽  
Poultry Industry ◽  
E Coli ◽  
Relative Risks ◽  
Multiple Drug Resistant ◽  
Commercial Broiler

Antimicrobial agents are used extremely in order to reduce the great losses caused byEscherichia coliinfections in poultry industry. In this study, 318 pathogenicEscherichia coli(APEC) strains isolated from commercial broiler flocks with coli-septicemia were examined for antimicrobials of both veterinary and human significance by disc diffusion method. Multiple resistances to antimicrobial agents were observed in all the isolates. Resistance to the antibiotics was as follows: Tylosin (88.68%), Erythromycin (71.70%), Oxytetracycline (43.40%), Sulfadimethoxine-Trimethoprim (39.62%), Enrofloxacin (37.74%), Florfenicol (35.85%), Chlortetracycline (33.96%), Doxycycline (16.98%), Difloxacin (32.08%), Danofloxacin (28.30%), Chloramphenicol (20.75%), Ciprofloxacin (7.55%), and Gentamicin (5.66%). This study showed resistance against the antimicrobial agents that are commonly applied in poultry, although resistance against the antibiotics that are only applied in humans or less frequently used in poultry was significantly low. This study emphasizes on the occurrence of multiple drug resistantE. coliamong diseased broiler chickens in Iran. The data revealed the relative risks of using antimicrobials in poultry industry. It also concluded that use of antibiotics must be limited in poultry farms in order to reduce the antibiotic resistances.

scholarly journals Analysis of Genomes of Bacterial Isolates from Lameness Outbreaks in Broilers

2020 ◽  
Author(s):  
N. Simon Ekesi ◽  
Beata Dolka ◽  
Adnan A.K. Alrubaye ◽  
Douglas D. Rhoads
Keyword(s):  
Escherichia Coli ◽  
Broiler Chickens ◽  
Bacterial Species ◽  
Mobile Element ◽  
Mobile Dna ◽  
E Coli ◽  
Host Shifts ◽  
Sister Clade ◽  
Commercial Broiler ◽  
Genome Assemblies

AbstractWe investigated lameness outbreaks at commercial broiler farms in Arkansas. From Bacterial Chondronecrosis with Osteomyelitis (BCO) lesions, we obtained different isolates of distinct bacterial species. Genome assemblies forEscherichia coliandStaphylococcus aureusisolates show that BCO-lameness pathogens on farms can differ significantly. Genomes assembled fromEscherichia coliisolates from three different farms were quite different from each other, and more similar to isolates from different hosts and geographical locations. The S aureus genomes were closely related to chicken isolates from Europe, and appear to have been restricted to chicken hosts for more than 40 years. Detailed analyses of genomes from this clade of chicken isolates with a sister clade of human isolates, suggests the acquisition of a particular pathogenicity island in the transition from human to chicken pathogen and that pathogenesis in chickens may depend on this mobile element. Phylogenomics is consistent with more frequent host shifts forE. coli, whileS. aureusappears to be highly host restricted. Isolate-specific genome characterizations will help further our understanding of the disease mechanisms and spread of BCO-lameness, a significant animal welfare issue.ImportanceDetailed inspection of the genome sequences of different bacterial species associated with causing lameness in broiler chickens reveals that one species,E. coli, appears to easily switch hosts from humans to chickens and other host species. Conversely, isolates ofS. aureusappear to be restricted to specific hosts. One potential mobile DNA element has been identified that may be critical for causing disease in chickens forS. aureus.

Pathogenicity of local identified NDV strain related to genotype VII to 28 day old commercial broiler chickens

2018 ◽  
Vol 5 (4) ◽  
Author(s):  
Mohamed M Amer ◽  
Hagar M Ahmed ◽  
Khaled M Elbayoumi ◽  
Mohamed A Kutkat
Keyword(s):  
Broiler Chickens ◽  
Commercial Broiler ◽  
Genotype Vii
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