Antimicrobial resistance profile of local campylobacter jejuni recovered from ceca of dressed chickens of commercial and backyard raisers in Laguna, Philippines

Abstract

Twelve Campylobacter jejuni isolates from the ceca of chickens at dressing plants of commercial and backyard raisers were tested for susceptibility to 14 different antibiotics using the Kirby-Bauer Method. Isolates showed multi-resistance being resistant to more than 7 different antibiotics tested, presenting at least eight multiple resistance patterns. Majority of isolates (10/12, 83.33%) came from chickens whose livers were previously detected to be positive for antibiotic residues by Four Plate Test. A statistically significant relationship (p<0.05) was found between resistance to chemically unrelated antibiotics with occurrence of residues. Lowest level of resistance to erythromycin (33.3%) parallels the observation that among the antibiotic residues detected in the sampled chicken populations, macrolides were also the least frequent type of antibiotic detected. Data reflect a possible relationship between antibiotic usage in poultry production and development of microbial resistance. Resistance to all antibiotics was observed for two isolates from chickens of commercial producers. Multi-resistance of isolates reflects a similar trend for increasing frequency of resistance in countries where use of antimicrobial drugs in humans and animals is relatively unrestricted. This is the first report on the occurrence of multi-resistance among local C. jejuni isolates in the Philippines.

Source or Periodical Title

Philippine Journal of Veterinary Medicine

ISSN

317705

Page

87-94

Document Type

Article

Subject

Antimicrobial residues, Antimicrobial resistance profile, Dressed chicken, Four plate test

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