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November 14, 2025BMC Veterinary ResearchOpen Access

Antibiotic susceptibility pattern and resistance genes in Salmonella strains isolated from cattle

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Authors

MMMuhammad Zeeshan MalikSKSaeed-ul-Hassan. KhanHIHamid Irshad

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Overview

Analysis reveals high antibiotic resistance in Salmonella from dairy farms, indicating the need for improved animal health strategies.

Key Points

  • To assess the antibiotic susceptibility and resistance genes in Salmonella from Pakistani cattle.
  • Collected 100 fecal samples from dairy farms with a history of enteric disease.
  • Confirmed Salmonella isolates using biochemical tests and InvA gene PCR.
  • Determined antibiotic susceptibility using disk diffusion method per CLSI guidelines.
  • Screened isolates for antibiotic resistance genes using PCR.
  • Confirmed 28 Salmonella samples from 100 collected.
  • 100% resistance to oxytetracycline and doxycycline; 64% resistance to ampicillin.
  • 100% susceptibility to ceftriaxone, cefixime, and sulfamethoxazole-trimethoprim; lower resistance to gentamicin, ciprofloxacin, co-amoxiclav, and imipenem.
  • Prevalence of resistance genes: tetA (25%), bla TEM−1 (18%), tetC (3.6%).

Cite This Study

Malik et al. (2025) studied this question.

synapsesocial.com/papers/692519a7c0ce034ddc353e95https://doi.org/10.1186/s12917-025-05081-4
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