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Table 3 Antimicrobial resistance patterns of 192 isolates recovered from boot swab and faeces samples on MC media on D10 and D21, post arrival of egg/chick onto on-farm hatching farms (n = 5) and conventional hatching farms (n = 5)

From: Antimicrobial resistance in Escherichia coli isolated from on-farm and conventional hatching broiler farms in Ireland

AMR PROFILE Number of isolates % Isolates
CEF 60 31%
AMP, CEF, CHL, SXT 24 12%
AMP, CEF, SXT 13 7%
AMP, CEF, DOX, SXT 11 6%
AMP, CEF 10 5%
CEF, ENR, DOX 7 4%
AMP, CEF, DOX, NIT, SXT 6 3%
AMP, CEF, DOX, CHL, SXT 6 3%
CEF, DOX, CHL, SXT 5 3%
CEF, DOX 5 3%
CEF, CHL 4 2%
CEF, NIT 4 2%
Other patterns found in 3 isolates or less 35 18%
Fully susceptible 2 1%
Total 192 100%
MDR 84 44%
  1. AMP ampicillin, AMC amoxycillin clavulanic acid, CEF cefalexin, CPD cefpodoxime, CEV cefovecin, CTZ ceftazidime, CFR ceftiofur, CHL chloramphenicol, CIP ciprofloxacin, ENR enrofloxacin, DOX doxycycline, GEN gentamicin and SXT trimethoprim sulfamethoxazole