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              Research
                            
              
                              
                              3. 
                              Prevalence and antimicrobial susceptibility of 
                              coagulase-negative staphylococci isolated from 
                              bovine mastitis - 
                              B. B. Kaliwal, S. O. Sadashiv, M. M. Kurjogi, R. 
                              D. Sanakal
                              Vet World. 2011; 4(4): 158-161
              
               
              
              
              doi: 
              10.5455/vetworld.2011.158-161
              
              
               
              
              
              
   
 
              
               
               
               
              
              
              Abstract
              
                            
                              
                              The study was carried out to investigate the 
                              prevalence and antimicrobial susceptibility of 
                              Coagulase-Negative Staphylococci isolated from 
                              Bovine Mastitis in and around Dharwad region. A 
                              total of 310 samples were screened and 180 
                              confirmed Coagulase-Negative Staphylococci were 
                              obtained. The antimicrobial susceptibility of 
                              Coagulase-Negative Staphylococci against 10 
                              antimicrobial agents was tested using the disc 
                              diffusion method. The highest numbers of Coagulase-Negative 
                              Staphylococci were susceptible to ceftriaxone 
                              83.88% followed by cefotaxime 79.41%, methicillin 
                              76.47%, ciprofloxacin 73.52%, erythromycin 70.05%, 
                              amikacin 66.11%, gentamycin 42.94%, amoxicillin 
                              36.76%, ampicillin 29.41%, and the lowest 
                              susceptibility was shown in penicillin 23.23% . 
                              The results indicated that the increase in 
                              prevalence and antibiotic resistance pattern of 
                              the Coagulase-Negative Staphylococci isolated from 
                              bovine mastitis exhibited the highest degree of 
                              susceptible to ceftriaxone of all the tested 
                              antimicrobial agents. 
              
                              
              Keywords: Bovine 
                              mastitis, Coagulase negative staphylococcus, 
                              Prevalence, Antibiotics.