Diagnostic Value of the Characteristics of Staphylococcus hyicus and Staphylococcus chromogenes
Acta Veterinaria Brno
Skalka B.: Diagnostic Value of the Characteristics of Staphylococcus hyicus and Staphylococcus chromo genes. Acta vet. Brno, 60, 1991: 277-283. The value of the following 12 characteristics of Staphylococcus hyicus and Staphylococcus chromo genes for their routine identification was assessed: inhibition of staphylococcal delta haemolysin, hyaluronidase production, Tween 80 hydrolysis, proteolytic, phosphatase and urease activity, pigment production and aerobic acid production from sucrose,·
... from sucrose,· trehalose, mannose, maltose and mannitol. Of a total of 937 novobiocin-sensitive staphylococci use in the study 544 were S. hyicus strains, 322 were S. chromogenes strains and 71 showed characteristics classifying them as intermediaries between the two species. The characteristic shared by all Of them was their ability to inhibit staphylococcal delta haemolysin. All S. hyicus strains produced hyaluronidase and hydrolysed Tween 80. On the basis of their differing proteolytic activity and carbohydrate utilization they were divided into three groups unequal in number. All S. chromo genes strains were intensely proteolytic, did not produce hyaluronidase and did not hydrolyse Tween 80. On the basis of their differing pigment production and acid production from carbohydrates they were divided into three groups unequal in number. The 71 strains originally not classified within either of the two species hydrolysed Tween 80. In view of this characteristic they were classified by us within the species S. hyicus although they did not produce hyaluronidase.