Tevis Research Evaluates Horses’ Blood Chloride Levels
During the 2012 Tevis Cup 100-mile endurance ride, Langdon Fielding, DVM, Dipl. ACVECC, of Loomis Basin Equine Medical Center, in California, and head Tevis veterinarian Greg Fellers, DVM, oversaw a research project aimed at improving veterinarians’ ability to quickly and accurately identify horses in danger of metabolic failure. And the team is back again this year to further that research.
A preliminary analysis of data taken last year from approximately 176 horses at the 36-mile checkpoint, Robinson Flat, showed that lower chloride values in the blood were associated with a horse’s failure to complete the event.
“This research project looked to answer two questions,” Fellers said. “Is it possible to sample on-site during a competition and run results within an hour hold? Second, is there something in the blood work that can help officials identify a horse that might have trouble coping with the exertion of the ride and be unable to complete?”
The research team tested blood samples for packed cell volume, plasma protein, acid/base balance, and electrolytes. They also looked at recorded physical exam parameters such as heart rate and capillary refill recorded at the same 36-mile check point; however, none of those were associated with future
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