Índice glicêmico e metabolismo dos lipídios nos cavalos alimentados com diferentes níveis de extrato etéreo no concentrado

Abstract

Changing the concentrations of blood metabolites in the horse are important indicators of metabolic responses to diets. We determined the effects of ingestion of concentrates containing different percentages of ether extract and ground corn in the concentration of biochemical parameters in horse. Five horses and five treatments (EE 6.5%, EE 12%, EE 14%, EE 20% and corn), randomly assigned in a 5x5 factorial. The animals were adapted to the ingestion of different treatments for 10 days and in 11th day blood samples were drawn after a fasting of 12 hours through the puncture in the jugular vein on eight occasions, for analysis of metabolites (glucose [GLUC] ), total plasma protein [PPT], hematocrit [HT], total cholesterol [COLE-T], triglycerides [TRIG], urea [UREA] and creatinine [CREAT]). The results were subjected to analysis of variance for repeated measures, both by one-way ANOVA was utilized for analysis within the same concentrate, as the two-way ANOVA for analysis of diets and stages, with significance set at P <0.05, using the SigmaStat ® 3.0 for Windows ®. The Tukey or Dunnett method was used for multiple comparison between means and the level of significance set at P <0.05. The results showed that intake of diets containing different percentages of ether extract and ground corn did not affect blood glucose, no differences were observed in [glucose] with the fasting animals, but differences were observed at the peak of [GLUC] after 2 hour supply of food, no significant changes were observed in the other metabolites examined. We conclude that such information is of great value to veterinarians who provide follow-up of horses, especially the athlete, for that receive large amounts of concentrated energy, thus trying to establish a concentrate that can provide more energy during the achievements of the exercises.