[Efficacy of a modified formula dry cow preparation for dairy cattle containing 600 mg cloxacillin]

The efficacy of a dry cow preparation containing 600 mg of cloxacillin in a modified formulation was investigated in 177 cows on 44 Dutch dairy farms. The cure-rate of 43 quarters infected with the most common udder pathogenic Streptococci (Streptococcus agalactiae, Streptococcus uberis and Streptococcus dysgalactiae) was 100%. The cure-rate of 146 quarters infected with Staphylococcus aureus was 71.9%. The number of new infections during the dry period was low (3.4%).