Recovery from udder cleft dermatitis in dairy cows

Udder cleft dermatitis (UCD) is a common skin problem in dairy cows, localized at the fore udder attachment or between halves. The main objectives of this study were to investigate spontaneous recovery from UCD longitudinal and treatment effect on topical spray containing chelated copper zinc an additional trial. Spontaneous was investigated during 1-yr which 7 Swedish herds visited 9 times each, 6-wk intervals. During visits, all cows milked milking parlor examined for mild severe UCD, conformation traits, hygiene, hock lesions. Additional cow herd data obtained official milk recording scheme. Recovery defined as 2 consecutive observations no after case (1 more UCD). rate calculated factors associated with analyzed using discrete-time survival analysis. A conducted 4 completion study. Cows allocated control group, group treated once every day 14 28 d. At follow-up visits d 14, 28, 56, scored UCD. To treatment, ordered logistic regression model used, score 56 (no, mild, severe) outcome. Other potential explanatory variables also included model. total 38% (126 329) made long duration lesions higher parity reduced chance recovery. Among recovered 47% (59 126 cows) had recurrent In study, there difference groups. Factors that affected before started, 1 conformation. Our findings emphasize importance further studies identify effective regimens well unravel pathophysiology improve recommendations how prevent these