ANTIMICROBIAL SUSCEPTIBILITY OF COAGULASE-NEGATIVE STAPHYLOCOCCUS SPECIES ISOLATED FROM BOVINE INTRAMAMMARY INFECTIONS

摘要

Bovine mastitis is the leading cause of economic losses in dairy herds worldwide. Diverse organisms like bacteria, mycoplasma, yeasts, and algae have been attributed as etiological agents for mastitis. In the last 4 decades, there has been a drastic change in the types of mastitis-causing pathogens. Currently, environmental mastitis is the major problem on modern, well-managed dairy farms. Coagulase-negative staphylococci (CNS) are among the most commonly isolated bacterial species from the bovine mammary gland. The CNS group is a collection of more than 30 species and subspecies. The role of CNS in bovine mastitis has come under increased scrutiny with more isolates associated with clinical and subelinical intramammary infections (Kudinha and Simango, 2002; Gentilini et al. 2002).