Perfil bioquímico e capacidade antioxidante total em cavalos de suplementados com selênio e vitamina E.

Abstract

Horses have great ability to transport oxygen, however, situations of excessive physical effort in sports activities, leading to conditions of oxidative stress with potential for developing injuries that affect primarily the muscles of these animals. With the aim of evaluating biochemical and oxidatives changes and exercise-induced in plasma of horses and the effect of supplementation of selenium (Se) and vitamin E on these parameters, 16 horses were divided into two groups, one being supplemented by 20 days and vitamin E and the second control group. They attended a polo game so to reproduce the conditions of competition. Have not been highlighted significant differences between groups, but the treated group showed less variation in serum creatinine levels after the game, the enzyme activity of serum AST presented significant variation in animals and control group remained stable for the treated group, the enzyme CK amounted in both groups, but remained high within 72 h in the tracking group. The largest plasma lactate variation was observed in the tracking group differing basal value already after the first game time. The total antioxidant capacity fell shortly after the first game time, returning to basal value after 24 hours. Not observed difference between groups. We conclude that supplementation with selenium and vitamin E promoted a increased resistance to muscular injury in the treated animals, but did not affect the total antioxidant capacity in the treated group compared with the control group.