Impact of On-Farm Interventions against CTX-Resistant Escherichia coli on the Contamination of Carcasses before and during an Experimental Slaughter.
Michaela ProjahnJana SachsenroederGuido Correia-CarreiraEvelyne BeckerAnnett MartinChristian ThomasCarolin HobeFelix ReichCaroline RobéUwe RoeslerAnnemarie KäsbohrerNiels BandickPublished in: Antibiotics (Basel, Switzerland) (2021)
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 x 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.
Keyphrases
- drinking water
- klebsiella pneumoniae
- escherichia coli
- health risk
- risk assessment
- health risk assessment
- multidrug resistant
- human health
- physical activity
- healthcare
- pseudomonas aeruginosa
- endothelial cells
- public health
- heavy metals
- mental health
- cystic fibrosis
- biofilm formation
- heat stress
- social media
- health information
- high speed
- staphylococcus aureus
- wound healing