Evaluation of some antibiotics against Staphylococcus aureus milk isolates from mastitis cases in Rathi cattle
Abstract
An antibiogram profile for 15 different antibiotics obtained against 47 S. aureus isolates from Rathi cattle with clinical mastitis revealed that all the isolates were sensitive to 4 of the antibiotics viz. cloxacillin, gentamicin, sparfloxacin and methicillin, 96% to 90% isolates to chloramphenicol, ofloxacin, ciprofloxacin, streptomycin, oxacillin and co-trimaxazole in descending order. All the S. aureus isolates were resistant to penicillin-G and good amount of resistance was shown towards amoxicillin, ampicillin and oxytetracyclin. Though no resistance was recorded towards erythromycin but efficacy was only 54%. The study revealed that most of the antibiotics had a good efficacy against S. aureus of milk origin.
