Mastitis control in commercial dairy herds
evaluation of educational efforts
Crist, W. L.Heider, Lawrence E.Sears, P. M.Schmidt, G. H.
Journal of Dairy Science
43 farmers with milk showing positive Wisconsin mastitis test results were divided into 3 groups: group (i) had an extension meeting on mastitis plus four 3-monthly visits to their farms; group (ii) had meeting but no farm visit; and group (iii) were given no information. During 1 yr incidence of mastitis in groups (i), (ii) and (iii) fell from 45, 41 and 56% resp. to 28, 27 and 40%. Proportion of farms practising teat dipping rose from an av. of 14% to 69, 45 and 29% resp..