Nutritional Articles

Effects of oral potassium supplementation on acid-base status and plasma ion concentrations of horses during exercise

Published: 2005-07-07

Brief content of the article
The objective of this study was to compare the effects of oral supplementation with an experimental potassium-free sodium abundant electrolyte mixture (EM-K) with that of oral supplementation with commercial potassium-rich mixtures (EM+K) on acid-base status and plasma ion concentrations in horses during an 80-km endurance ride. The authors did not observe a clear treatment effect during the ride, which may have been caused by the intensity of the ride. However, the authors wrote that a potassium-free electrolyte mixture should be more beneficial in faster horses and in more competitive rides. The authors concluded that the observed increases in plasma H+ and K+ were moderate and unlikely to contribute to signs of muscle fatigue and hyper excitability in horses. A full abstract can be found on Pubmed.
Keywords: electrolytes; potassium; sodium; supplements; acid-base balance; strong ion difference.

Reference
Hess, T.M., Kronfeld, D.S., Williams C.A., Waldron, J.N., Graham-Thiers, P.M., Greiwe-Crandell, K., Lopes, M.A., Harris, P.A. 2005. Effects of oral potassium supplementation on acid-base status and plasma ion concentrations of horses during exercise. Am. J. Vet. Res. 66: 466-473.

Website and publisher
http://www.avma.org/