Chromosomal and plasmid DNA mediated antibiotic resistance among Staphylococcus aureus obtained from mastitic milk of cattle in Jaipur, Rajasthan

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Investigation reveals high rates of antibiotic resistance in Staphylococcus aureus from milk samples, highlighting risks in cattle health.

Eighty-five percent of isolated Staphylococcus aureus from mastitic milk showed multidrug resistance, indicating significant health risks.
Among 100 samples, 20 confirmed S. aureus was found, with 30% identified as MRSA, emphasizing the prevalence of resistant strains.
Antibiotic efficacy testing showed Gentamicin, Doxycycline, and Tetracycline were most effective, while resistance against Penicillin-G was highest at 80%.
Evaluation found that 90% of isolates carried the blaZ gene in chromosomal DNA, suggesting widespread dissemination of resistance mechanisms.

BASOTIA et al. (2025) studied this question.

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Investigation reveals high rates of antibiotic resistance in Staphylococcus aureus from milk samples, highlighting risks in cattle health.