Abstract
An epidemiologic study of 11 653 episodes of tramped teat is presented and various risk factors identified. Swedish Red and White Breed (SRB) had a lower incidence than Swedish Friesian Breed (SLB). The incidence increased to reach a peak in the fifth (SRB) and fourth (SLB) parities. The incidence was highest in the month of calving and decreased throughout the lactation period. Dystocia and parturient paresis increased the risk of tramped teat in the month of calving in SRB cows. In SLB cows, parturient paresis increased the risk. Cows of both breeds with a positive history of tramped teat had an increased risk of recurrence in subsequent lactations. Loose-housed cows had a lower incidence than tied cows. A positive report of tramped teat increased the risk of removal, irrespective of mastitis status.
Published Version
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