TY - JOUR
T1 - Antimicrobial Resistance Patterns and Biofilms Resurgence Ability of Escherichia coli Associated with Commercial Layer Chicken Farms in Sri Lanka
AU - Subhasinghe, Iresha
AU - Bandara, H.M.H.N.
AU - Karunarathna, H.M.T.K.
AU - Kodithuwakku, S.P.
AU - Gallage, H.C.
AU - Kalupahana, R.S.
AU - Kottawatta, K.S.A.
N1 - Publisher Copyright:
© 2025 The Authors
PY - 2025/3/1
Y1 - 2025/3/1
N2 - This study aims to understand antimicrobial resistance (AMR) associated with planktonic and biofilm-forming bacteria in Sri Lankan chicken industry. Planktonic or biofilm-forming Escherichia coli were isolated from different sources in layer chicken farms and their AMR profiles were determined. Minimum inhibitory concentrations (MICs) of selected antibiotics were quantified against planktonic E. coli isolated from water. Minimum biofilm inhibitory/eradication concentrations (MBIC/MBEC) of tetracycline were determined for biofilm E. coli. Faecal E. coli demonstrated highest resistance to tetracycline (64% of isolates). Biofilm-derived planktonic E. coli showed greater resistance to antibiotics than planktonic E. coli (75% vs 62.5%). The MBIC and MBEC of tetracycline in E. coli biofilm phenotype were significantly greater than MIC of planktonic phenotype of the same isolate (P
AB - This study aims to understand antimicrobial resistance (AMR) associated with planktonic and biofilm-forming bacteria in Sri Lankan chicken industry. Planktonic or biofilm-forming Escherichia coli were isolated from different sources in layer chicken farms and their AMR profiles were determined. Minimum inhibitory concentrations (MICs) of selected antibiotics were quantified against planktonic E. coli isolated from water. Minimum biofilm inhibitory/eradication concentrations (MBIC/MBEC) of tetracycline were determined for biofilm E. coli. Faecal E. coli demonstrated highest resistance to tetracycline (64% of isolates). Biofilm-derived planktonic E. coli showed greater resistance to antibiotics than planktonic E. coli (75% vs 62.5%). The MBIC and MBEC of tetracycline in E. coli biofilm phenotype were significantly greater than MIC of planktonic phenotype of the same isolate (P
U2 - 10.1016/j.vetmic.2025.110422
DO - 10.1016/j.vetmic.2025.110422
M3 - Article (Academic Journal)
C2 - 39923390
SN - 0378-1135
VL - 302
JO - Veterinary Microbiology
JF - Veterinary Microbiology
M1 - 110422
ER -