antimicrobial susceptibility, S. uberis, bovine intrammamary infections, antimicrobial resistance
mortality, epidemiology, calf, dairy
antimicrobial resistance, Calves, milk production
S. aureus, Intramammary infections, Heifers, molecular characterization
Staphylococcus aureus, intramammary infections, Pulse Fiel gel Electrophoresis, FTIR spectroscopy
Bovine leukemia virus, Beef cattle, Risk factor, Seroprevalence, Herd management
bovine tuberculosis, dairy farms, ELISA