Article history: Received: 18-09-2017, Accepted: 16-11-2017, Published online: 16-12-2017
Corresponding author: Aliye Gulmez Saglam
E-mail: email@example.comCitation: Gulmez Saglam A, Sahin M, Celik E, Celebi O, Akca D, Otlu S (2017) The role of staphylococci in subclinical mastitis of cows and lytic phage isolation against to Staphylococcus aureus, Veterinary World, 10(12): 1481-1485.
Aim: This study was conducted to determine the role of Staphylococcus in the formation of subclinical mastitis in cows and to isolate the phage against isolated Staphylococcus aureus strains.
Materials and Methods: In this study, 400 milk cows were screened by California Mastitis Test (CMT) for subclinical mastitis and 235 udders of 96 cows, which were determined to be positive, were evaluated for Staphylococcus. Milk samples were evaluated using conventional and molecular methods. In addition, phage isolation studies were performed against S. aureus strains causing mastitis.
Results: At the result of cultural examination, of 235 milk samples that were found as positive for mastitis by CMT, a total of 117 (49.7%) Staphylococcus spp. were isolated as a distribution of 74 (63.24%) coagulase-positive staphylococci and 43 (36.75%) coagulase-negative staphylococci. Of these isolates, 76 (64.95%) were characterized as S. aureus both conventional and molecular techniques. Lytic bacteriophages against two S. aureus strains which were isolated from mastitic milk samples were obtained from wastewater samples.
Conclusion: The results of this study show that a significant portion of subclinical mastitis was formed by staphylococci. In addition, phage isolation against S. aureus strains isolated can be considered as one of the steps to be applied in the prophylaxis and treatment of such infections.
Keywords: bacteriophage, dairy cow, Staphylococcus aureus, subclinical mastitis.
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