Detection of sensitive and mutant ruminal bacteria isolates from sheep, cattle, and buffalo using 14 therapeutic antibiotics

In the present study, sensitive and mutant colonies of some ruminal bacterial species isolated from sheep, cattle, and buffalo were detected. We counted and considered \"mutant colonies\" the bacterial colonies grown in the clear inhibition zone in the Kirby-Bauer disk diffusion susceptibility test. Detected mutant colonies were higher in buffalo than in cattle and sheep. Duricef and metronidazole caused no mutations in any species. The others formed mutant colonies, where roxithromycin = polymyxin = chloramphenicol = gentamicin streptomycin = piperacillin > erythromycin > vancomycin = cefoperazone = cefotaxime > roxithromycin > polymyxin > chloramphenicol). The number of sensitive isolates of the different ruminant species for all the antibiotics was highest in buffalo, followed by cattle and then sheep (P < 0.05). We could conclude that subtherapeutic antibiotic use in ruminant feeding may lead to the formation of antibiotic-resistant mutant colonies, making their subtherapeutic effect nonexistent.

• Publication year

  2014

• Venue

  Turkish Journal of Veterinary & Animal Sciences

• Publication date

  2014-09-05

• Fields of study

  Biology, Medicine, Environmental Science

• Identifiers
  DOI 10.3906/VET-1402-11
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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