National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The purpose of this study was to investigate sub-clinical mastitis in organized dairy farm and prevalence of Staphylococcus aureus with its antibiogram pattern. The present study was carried out at Research Cum Development Project on Cattle, Mahatma Phule Krishi Vidyapeeth, Rahuri, Maharashtra. A total of 1296 lactating crossbred cows (5184 quarters) were investigated for sub-clinical mastitis. Samples positive for sub-clinical mastitis were subjected for isolation and biochemical characterization. Isolates that was confirmed as S. aureus were subjected for antibiotic-susceptibility testing. The overall quarter wise incidence of sub clinical mastitis among 1296 crossbred cows was 3.62 per cent (188 quarters out of 5184 quarters). After biochemical characterization, S. aureus was confirmed in 152 samples (80.85 %). Antibiotic resistance pattern revealed that the highest resistance to the antimicrobials used was to observed in Cephalexin (86.84%), followed by Co-trimoxazole (82.89%), Penicillin G (82.23%), Ampicillin (81.57%), Cefoperazone (76.97%), Ceftriaxone (69.73%), Cefotaxime (65.13), Amoxyclav (63.15%), and Tetracycline (54.60 %) Chloramphenicol (46.71%), Ciprifloxacin (42.10%), Gentamicin (38.81%), Enrofloxacin and Levofloxacin (19.73 % each). This study confirms the importance of S. aureus as a major mastitis causing bacterium and existence of alarming level of resistance to frequently used antibiotic by S. aureus and a potential risk for human health from nearly possible transmission of the S. aureus strains as milk borne pathogen.
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