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Revista Colombiana de Ciencias Pecuarias
Print version ISSN 0120-0690On-line version ISSN 2256-2958
Abstract
MATEUS, Karina A et al. Antimicrobial resistance of Escherichia coli isolates from spray‑chilled sheep carcasses during cooling. Rev Colom Cienc Pecua [online]. 2021, vol.34, n.1, pp.63-72. Epub June 15, 2022. ISSN 0120-0690. https://doi.org/10.17533/udea.rccp.v34n2a04.
Background:
Multidrug-resistant bacteria present in food of animal origin raise human and animal health concerns.
Objective:
To assess antimicrobial resistance of Escherichia coli isolates from sheep carcasses subjected to spray-chilling with water (4 and 10 hours) during cooling.
Methods:
Thirty surface swabs were collected from carcasses before and after the last water spray in two slaughter periods. In a first assessment (1st sampling), three spray-chilled carcasses (4 hours), three non-sprayed and one control carcass were sampled. In a second assessment (2nd sampling), the same number of carcasses and treatments were maintained, but spray-chilling was extended to 10 hours. All samples collected were isolated and submitted to susceptibility test using 16 (1st sampling) and 17 (2nd sampling) antimicrobials, respectively.
Results:
Overall, E. coli isolates were resistant most antimicrobials. Spray-chilled and control carcasses (10 hours) showed resistance to meropenem.
Conclusion:
E. coli isolates from carcasses subjected to spray-chilling with water for 10 hours had higher antimicrobial resistance to one, two, and four antimicrobial classes, characterizing a multidrug resistance profile. These results highlight the need to monitor health status throughout the meat production processes.
Keywords : antimicrobial; antimicrobial resistance; antibiotic; bacterial resistance; carcass; enterobacteria; Escherichia coli; microbial resistance; multi-resistant organism; multidrog resistance; public health; sheep;slaughter; spray-chilled; spray-chilling.