2016 ACVIM Forum Research Abstract Program

Based on these findings, LDA is likely more common in beef calves than many veterinarians recognize and it should be considered as a differential for calves that present with abdominal distention. Concurrent laryngeal dysfunction has not been previously described in beef calves with LDA and may be a contributing factor in the pathogenesis of this disorder. Ultrasonography is a widely available chute-side diagnostic technique that can rapidly confirm the diagnosis in beef calves. Rolling is a useful adjunctive measure for allowing temporary improvement in cases with severe metabolic alterations, but may be associated with catastrophic intestinal complications in calves as has been reported in adult cows. Therefore, surgical correction is recommended, and right paramedian abomasopexy under sedation and local block is a feasible method of correction of LDA in beef calves. Adequate absorption of bovine colostrum correlates with improved neonatal health. The apparent efficiency of absorption (AEA) of immunoglobulins can be measured using a mathematical equation based on serum and colostral IgG concentration levels, as well as the volume of colostrum being fed and the body weight of the calf. While commonly measured in research projects, little information is available on the normal AEA across a large group of healthy calves on multiple farms. The purpose of this study was to observe how contributing factors (volume of feeding, birthweight and time of feeding) can alter AEA, and to establish a normal range of AEA in healthy calves.