LIVESTOCK PRODUCTION SCIENCE, cilt.34, sa.1-2, ss.175-180, 1993 (SCI-Expanded)
Milk and disease records were used from 1275 lactations of British Friesian cows. The records were made at Sonning farm of Reading University between 1984 and 1989. Eight hundred and forty pairs of successive lactations were available from the total recorded to develop a statistical model that considers the predictability of a cow having mastitis in the second lactation ('current') of the pairs given the mastitis history of the same cow in the first lactation (preceding).
Logistic analysis indicated that cows with mastitis in the preceding lactation were almost twice as susceptible to clinical mastitis in the 'current' lactation than those without mastitis in the preceding lactation, with probabilities of 0.46 and 0.29, respectively.