Parâmetros fisiológicos e equilíbrio hidroeletrolítico e ácido base de equinos atletas em treinamento de vaquejada

Abstract

The hemogasometric and biochemical analyzes of horses used in equestrian tests provide important results on their physiological responses, especially those of the base acid balance, as well as the type and intensity of the exercise. Among these tests, the most performed in the Brazilian Northeast is vaquejada, in which the exercise is of high intensity and short duration, and the preferred race is the quarter of the mile. The objective of this study was to evaluate the hydroelectrolytic balance and acid base of Quarter Horse horses under vaquejada test training. Ten Quarter Horse horses, adults, males or females, were evaluated during a physical examination (heart and respiratory rates, rectal temperature and capillary filling time), hematocrit and biochemical parameters in the venous blood (serum: sodium , PH, HCO3 -, EB, pCO2, pO2, sO2 and tCO2.), Potassium, chloride, creatinine and osmolarity, plasma lactate and total proteins. The evaluations were performed before the beginning of the training (M0); Immediately after the end of the training (M1), which consisted of ten minutes warm-up, and three sprints intervals in five minutes; And one hour after the training (M2), with the animals already at rest. After the end of exercise (M1), there was a reduction in pH, a decrease in HCO- 3, pCO2, and EB, and a large increase in plasma lactate concentrations, characterizing metabolic acidosis and hyperlactatemia (lactic acidosis). There was a rise in HR, RR, and TR, while CPT did not change. There was no difference between the studied moments for pO2, sO2, sodium, chloride and potassium. These indices returned to concentrations close to basal time (M0) after one hour of rest (M2). It is concluded that alteration in the base acid balance and hyperlactatemia occurs in equine athletes adapted to the vaquejada training after three sprints of vaquejada training, being necessary an hour of rest so that they are restored.