Haemolytic and proteolytic activity of coagulase-negative staphylococci isolated from mastitis cows

• Autorzy: Bochniarz M. , Wawron W.
• Języki publikacji: EN

Abstrakty

EN

The aim of the present study was to assess the haemolytic and proteolytic activity of coagulase- negative staphylococci (CNS) isolated from cows with mastitis. The study was conducted on 100 CNS strains: S. xylosus (n=28), S.chromogenes (n=26), S.haemolyticus (n=25), S. sciuri (n=14), S. warneri (n=4), S.hominis (n=2), S.saprophyticus (n=1); 22 CNS were isolated from cows with clinical mastitis and 78 from those with subclinical mastitis. The CNS studied showed the ability to produce only α-haemolysin and belonged to one strain – S. haemolyticus (21.0% of isolated CNS strains). Haemolysin-positive CNS were responsible for both clinical and subclinical mastitis (22.7% and 20.5%, respectively). The ability to produce protease was found in 31.0% of CNS belonging to two strains: S. chromogenes and S. sciuri. Protease-positive CNS were the etiological factor of both clinical and subclinical mastitis (31.8% and 30.8%, respectively). All S. xylosus, S. warneri, S. hominis, and S. saprophyticus strains were found protease-negative and haemolysin-negative, irrespective of whether they caused clinical or subclinical mastitis in cows.

Słowa kluczowe

EN

animal disease; hemolytic activity; proteolytic activity; coagulase-negative staphylococci; isolation; mastitis; cow

• Wydawca: -
• Czasopismo: Polish Journal of Veterinary Sciences
• Rocznik: 2012
• Tom: 15
• Numer: 1
• Opis fizyczny: p.61-65,ref

Twórcy

autor

Bochniarz M.

• Department and Clinic of Animal Reproduction, Faculty of Veterinary Medicine, University of Life Sciences, Gleboka 30, 20-612 Lublin, Poland

autor

Wawron W.

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