- Tytuł:
- Haemolytic and proteolytic activity of coagulase-negative staphylococci isolated from mastitis cows
- Autorzy:
-
Bochniarz, M.
Wawron, W. - Powiązania:
- https://bibliotekanauki.pl/articles/31840.pdf
- Data publikacji:
- 2012
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
animal disease
hemolytic activity
proteolytic activity
coagulase-negative staphylococci
isolation
mastitis
cow - Opis:
- 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.
- Źródło:
-
Polish Journal of Veterinary Sciences; 2012, 15, 1
1505-1773 - Pojawia się w:
- Polish Journal of Veterinary Sciences
- Dostawca treści:
- Biblioteka Nauki
Artykuł