Date of Graduation
Master of Natural and Applied Science in Agriculture
College of Agriculture
horse, fescue, exercise, aerobic, ergotamine
Ten horses were assigned into two treatment groups. Horses were fed either ergot alkaloid containing (E+) or ergot alkaloid free (E-) fescue seed added to a grain based ration. After 5 weeks, seed treatments were switched between groups for the second 5 weeks. Diets contained 8.2% seed resulting in intakes of 275 ppb ergotamine and 132 ppb ergovaline for the E+ diet. In weeks 3, 5, 8, and 10, horses were subjected to standardized exercise tests (SETs). During the aerobic SET, horses walked 4, trotted 10, and loped 11 minutes. To reach target heart rates, speeds averaged 2.36 m/s (trot) and 4.09 m/s (lope). Significant horse effects were found on respiration rates at 1, 5, 10, and 30 minutes post-SET; heart rates at rest, during the SET, end of SET and 1, 5, and 10 minutes post-SET; and rectal temperatures at the end of SET and 1, 5, 10, and 30 minutes post-SET (P < 0.05). Treatment effects were observed on respiration rates at 30 minutes post-SET with higher rates in horses on E +; heart rates at rest, during the SET, end of SET, and 1 minute post-SET with lower rates in horses on E +; and rectal temperatures at 1 minute and 30 minutes post-SET with higher temperatures in horses on E + (P < 0.05).
© Kelsie Lynn Minton
Minton, Kelsie Lynn, "Effect of Ergotamine and Ergovaline Ingestion on Recovery in Horses Subjected to a Standardized Exercise Test" (2011). MSU Graduate Theses. 2062.