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Risk factors for abomasal displacement in dairy cows
B W Rohrbach1, A L Cannedy, K Freeman
1Department of Large Animal Clinical Sciences, College of Veterinary Medicine, University of Tennessee, Knoxville 37901, USA.
Objective:
To determine whether various periparturient events or 305-day milk production during the previous lactation period were associated with abomasal displacement in dairy cows.
Design:
Retrospective, case-control study.
Animals:
75 pairs of case and control cows from 3 university-owned and 3 commercial dairy herds.
Procedure:
Cows with abomasal displacement were matched with control cows on the basis of herd of origin, breed, age, and calving date. Frequency of specific periparturient events during the period from 2 weeks prior to parturition to diagnosis of abomasal displacement, as well as milk production during the preceding lactation period, were compared between case and control cows.
Results:
Multivariate analyses indicated that case cows were significantly more likely to have had retained placenta, ketosis, a stillborn calf, metritis, twins, or parturient paresis than were control cows. Dystocia, mastitis, and milk production during the previous lactation period were not associated with abomasal displacement.
Clinical Implications:
Results indicated that a variety of periparturient events were associated with development of abomasal displacement among dairy cows.