<strong>Effect of diets with soybean oil addition and training over muscular activity of equines submitted to resistance test</strong> - DOI: 10.4025/actascianimsci.v30i3.5714

Abstract

The aim of this study was to verify the effect of increasing soybean oil levels and training on the enzyme activity of Aspartate Aminotransferase (AST) and Creatine kinase (CK) as indicative of muscle work. Experimental diets were composed by five soy oil levels in the concentrate (control- no oil, 6, 12, 18 and 24%). Twenty Arabian horses, male and female, average weight of 400 kg were submitted to an 80-km endurance race in a treadmill. The treadmill experiment was conducted in the Exercise Physiology Laboratory. The endurance simulation was divided in 4 phases of 20 km each. The effect (p < 0.05) of soybean oil addition and run distance for CK and AST variables during the effort test and also in the recovering time were observed. It was concluded that soybean oil presents a beneficial effect on muscle work, as it decreases the activity of AST and CK enzymes in diets with more of 6% of soybean oil in the concentrate. The elevated value showed was not necessarily linked to muscle pathology presence. Each animal must be analyzed individually, based on its corresponding basal enzymatic activity.