Acta Scientiarum: Animal Sciences (Jul 2008)
Efeito de dietas com adição de óleo e do treinamento sobre a atividade muscular de equinos submetidos à prova de resistência = Effect of diets with soybean oil addition and training over muscular activity of equines submitted to resistance test
Abstract
O trabalho teve como objetivo verificar o efeito da adição de óleo de soja e do treinamento na atividade plasmática das enzimas Creatina Quinase (CK) e Aspartato Aminotransferase (AST) sobre o trabalho muscular de equinos submetidos a teste de resistência. Foram fornecidas dietas experimentais compostas por cinco níveis de óleo desoja no concentrado (controle, 6, 12, 18 e 24%). Foram utilizados 20 equinos da raça Árabe, peso médio de 400 kg, submetidos a teste de resistência de 80 km em esteira rolante, em Laboratório de Fisiologia do Exercício. A simulação de enduro foi dividida em quatro fasesde 20 km cada. Observou-se efeito (p The aim of this study was to verify the effect of increasing soybean oil levels and training on the enzyme activity of AspartateAminotransferase (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 weresubmitted 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 forCK 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 decreasesthe 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.
