Question: what antibiotic is used to treat mastitis in cows?
Answer: As a first choice for the systemic treatment of mastitis, either tylosin or erythromycin is recommended. At a dose rate of 12.5 mg/kg, either will maintain for 24 hours milk levels in excess of the average MICs for staphylococci. Of the sulphonamides, sulphanilamide and sulphadimidine produce the highest milk levels.