Meat ducks as carriers of antimicrobial-resistant Escherichia coli harboring transferable R plasmids.
J Vet Sci
; 25(5): e62, 2024 Sep.
Article
de En
| MEDLINE
| ID: mdl-39231787
ABSTRACT
IMPORTANCE Antimicrobial resistance (AMR) is a serious public health threat. AMR bacteria and their resistance determinants in food can be transmitted to humans through the food chain and by direct contact and disseminate directly to the environment. OBJECTIVE:
This study examined the AMR characteristics and transferable R plasmids in Escherichia coli isolated from meat ducks raised in an open-house system.METHODS:
One hundred seventy-seven (n = 177) commensal E. coli were examined for their antimicrobial susceptibilities and horizontal resistance transfer. The plasmids were examined by PCR-based plasmid replicon typing (PBRT) and plasmid multi-locus sequence typing (pMLST).RESULTS:
The highest resistance rate was found against ampicillin (AMP, 83.0%) and tetracycline (TET, 81.9%), and most isolates exhibited multidrug resistance (MDR) (86.4%). The R plasmids were conjugally transferred when TET (n = 4), AMP (n = 3), and chloramphenicol (n = 3) were used as a selective pressure. The three isolates transferred resistance genes either in AMP or TET. The blaCTX-M1 gene resided on conjugative plasmids. Five replicon types were identified, of which Inc FrepB was most common in the donors (n = 13, 38.4%) and transconjugants (n = 16, 31.2%). Subtyping F plasmids revealed five distinct replicons combinations, including F47A-B- (n = 2), F29A-B23 (n = 1), F29A-B- (n = 1), F18A-B- (n = 1), and F4A-B- (n = 1). The chloramphenicol resistance was significantly correlated with the other AMR phenotypes (p < 0.05). CONCLUSIONS AND RELEVANCE The meat ducks harbored MDR E. coli and played an important role in the environmental dissemination of AMR bacteria and its determinants. This confirms AMR as a health issue, highlighting the need for routine AMR monitoring and surveillance of meat ducks.Mots clés
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Sujet principal:
Canards
/
Escherichia coli
/
Antibactériens
Limites:
Animals
Langue:
En
Journal:
J Vet Sci
/
J. vet. sci
/
Journal of veterinary science
Sujet du journal:
MEDICINA VETERINARIA
Année:
2024
Type de document:
Article
Pays d'affiliation:
Chine
Pays de publication: