17-Title: Antimicrobial susceptibility pattern of Staphylococcus aureus isolated from bovine subclinical mastitic milk in Udaipur district, Rajasthan
Authors: Manisha Doot, Abhishek Gaurav, Sudeep Solanki, Dinesh M Chavhan and Vipin Chand Bairwa
Source: Ruminant Science (2022)-11(1):79-82.
How to cite this manuscript: Doot Manisha, Gaurav Abhishek, Solanki Sudeep, Chavhan Dinesh M and Bairwa Vipin Chand (2022). Antimicrobial susceptibility pattern of Staphylococcus aureus isolated from bovine subclinical mastitic milk in Udaipur district, Rajasthan. Ruminant Science 11(1):79-82.
Abstract
Staphylococcus aureus is a contagious pathogen which is one of the most common causes of subclinical mastitis. The extensive use of antimicrobials in the treatment of mastitis has led to the emergence of antimicrobial resistant strains. The present investigation was carried out to study the antimicrobial susceptibility pattern of Staphylococcus aureus isolates obtained from bovine subclinical mastitic milk against 14 antibiotics. A total of 85 S. aureus isolates were recovered from 133 subclinical mastitic quarter milk samples collected from 10 organized dairy farms in Udaipur, Rajasthan. Out of the 85 isolates of S. aureus recovered from milk samples, the analysis of antimicrobial susceptibility revealed that the most effective antibiotic was gentamicin (97.65%), followed by methicillin (94.11%), chloramphenicol and clindamycin (83.53% each). The isolates exhibited high resistance against ampicillin (72.95%) and penicillin G (65.89%), followed by oxytetracycline and trimethoprim (24.71% each). Hence, the prudent use of antimicrobials with follow-up of withdrawal periods should be made an essential part of the disease management strategy. This will help in preventing the development and emergence of antibiotic resistant strains which are a potential threat to public health.
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