Performance of a milk leukocyte differential test for decision-making in a selective dry cow therapy program
The sensitivity and specificity of the a commercial milk leukocyte differential (MLD) test ranged from 44-77% and 54-92%, respectively, in identifying infected quarters. The proportion of quarters positive to bacteriological culture and the incidence of clinical mastitis did not differ for cows treated with either blanket dry cow therapy (DCT) or selective DCT based on MLD test results.
Jun 1, 2019