![]() ![]() equorum (0, 54 and 0%, respectively) but with a specificity of 100, 99 and 100%, respectively. The positive predictive value was 89, 78 and 98%, respectively. The Staph-Zym needed additional tests for 66% of the isolates and identified 31% of the CNS isolates correctly. equorum (0%) albeit with specificity of 100%. chromogenes (37%), Staphylococcus warneri (15%) and S. Poor sensitivity was observed for 3 of the 5 most frequently found species, S. The positive predictive value was 89, 100 and 52%, respectively. epidermidis, Staphylococcus hyicus and S. Best agreement with rpoB sequence based species identification was found for S. The API Staph ID 32 correctly identified 41% of the CNS isolates. ![]() The most frequently isolated species based on rpoB sequencing were Staphylococcus chromogenes and Staphylococcus epidermidis, followed by Staphylococcus xylosus, Staphylococcus warneri and Staphylococcus equorum (37, 13, 9, 8 and 6% of isolates, respectively). A total of 172 CNS isolated from bovine milk were classified into 17 species. In this study, the accuracy of two phenotypic tests, API Staph ID 32 and Staph-Zym, was determined for identification of coagulase-negative staphylococci (CNS) from bovine milk samples in comparison with identification based on DNA-sequencing.
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