The feeding diets were evaluated containing low and high levels of soybean oil for athlete horses submitted to two rider aerobic training intensities, on the metabolic response of the blood biochemical parameters (triglyceride, total cholesterol, glucose and lactate) of importance to sports performance. Four horses were used in latin square design with treatments in a 2x2 factorial arrangement (two levels of soybean oil and two aerobic training intensities rider). Treatments consisted of levels of 5 and 15% soybean oil concentrates and two aerobic training intensities, 40 and 60 minutes. Blood samples were collected after the last workout, 40 or 60 min in each experimental period. Plasmatic parameters were monitored, triglyceride (TG), total cholesterol (TC), glucose (GLU) and lactate (LAC) after exercise. There was a reduction in TG (P<0.05), for horses consuming 15% of soybean oil and trained by aerobic for 60 minutes, the CT increased with increasing soybean oil (P <0.05), increase in LAC (P<0.05) in trained horses for 60 minutes regardless of level of soybean oil (1.48mmol/L) and there was no effect (P>0.05) of treatment on GLU. It can be concluded that the offer of concentrate with high content of soybean oil, should be associated with higher intensity aerobic training for athletic equine.
athletic performance; equine; physical activity; soybean oil