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Factors influencing the survival of dairy cows after correction of left displaced abomasum

Keith E. Sterner DVM1, Jorgen Grymer DVM, PhD2, Paul C. Bartlett MPH, DVM, PhD3, and Michele J. Miekstyn BS4
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  • 1 Sterner Veterinary Clinic PC, 821 N Jefferson St, Ionia, MI 48846
  • | 2 Galten Dyreklinik, Søndergade 24, 8464 Galten, Denmark
  • | 3 Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824
  • | 4 Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing, MI 48824

Abstract

Objective—To determine factors that influenced culling or death of cows with left displaced abomasum (LDA) subsequent to correction by a roll-and-toggle (R&T) procedure or via laparotomy.

Design—Cohort study.

Animals—810 Holstein dairy cows with LDA.

Procedures—Data regarding method of repair and risk factors for survival after correction of LDA were collected during a 1-year period. Outcomes were compared at days 14 and 60 after LDA correction for 3 groups of cattle (veterinarians performed R&T [V-R&T], herd personnel performed R&T [H-R&T], and veterinarians performed surgical repair via laparotomy [V-Surg]).

Results—Survival rates 14 days after LDA correction for the V-R&T, H-R&T, and V-Surg groups were 87% (286/329), 81% (327/403), and 85% (66/78), respectively. At 60 days after LDA correction, survival rates for the V-R&T, H-R&T, and V-Surg groups were 79% (260/329), 71% (286/403), and 73% (57/78), respectively. Multivariable analysis indicated that factors positively associated with failure to remain in the herd at 60 days after LDA correction included current mastitis status, history of a previous LDA, high preoperative risk, and correction of LDA by herd personnel rather than by a veterinarian.

Conclusions and Clinical Relevance—Correction of LDA by veterinarians via an R&T procedure yielded results that were generally comparable to those for correction by veterinarians via laparotomy. Although survival rates at days 14 and 60 after surgery differed significantly between the V-R&T and H-R&T groups, herd personnel in this study used the R&T procedure to correct LDA and achieved survival rates within the range for those of practicing veterinarians.

Contributor Notes

The authors thank Drs. Dennis Arnold, Rick Kramer, Melissa Legatt-Sanford, and Brian Whitlock for assistance with data collection.

Address correspondence to Dr. Sterner.