Bacteriological Culture and California Mastitis Test Results of Non-clinical Quarters from Cows with Clinical Mastitis

摘要

The economic value of lactation therapy of subclinical mastitis is generally considered to be limited because of the cost of milk discarded during the withdrawal period. However, the treatment of quarters affected with subclinical mastitis when treating other quarters affected with clinical mastitis does not result in additional discarded milk. A high proportion of infected nonclinical quarters in cows with clinical mastitis would warrant the development of tools for the identification and treatmentof those quarters. The objectives of this abstract are: 1) describe bacteriological culture results of non-clinical quarters in cows affected with clinical mastitis, and 2) validate the California Mastitis Test (CMT) to identify subclinically infected quarters in these cows.