Blood Parameters of Horses Trained on a Treadmill (Diphosphoglycerate, Exercise)
Stull, Carolyn Louise
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Permalink
https://hdl.handle.net/2142/70017
Description
Title
Blood Parameters of Horses Trained on a Treadmill (Diphosphoglycerate, Exercise)
Author(s)
Stull, Carolyn Louise
Issue Date
1984
Department of Study
Animal Sciences
Discipline
Animal Sciences
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Keyword(s)
Biology, Animal Physiology
Abstract
Four experiments were conducted to establish the role of 2,3-diphosphoglycerate (2,3-DPG) and other blood parameters in the oxygen pathway of resting and exercising horses throughout a conditioning program.
The first study examined the utilization of a treadmill to simulate racing or training workloads on heart rates and lactate levels in horses. A standardized protocol was used whereby the horse walked for three minutes, then trotted progressively faster at one minute intervals until the maximum speed (5.3 meters per second), was reached. Results showed that heart rate and lactate levels similar to those of traditional conditioning routines can be produced by increasing the speed and inclination of the treadmill's belt.
The second study was conducted to determine if resting 2,3-DPG levels and other related blood parameters change with submaximal conditioning routines, while in the third study a more rigorous routine was used. Blood samples were taken weekly from an exercised treatment group and a control group. The exercised group was conditioned on the treadmill three times per week for six weeks. Resting values for 2,3-DPG, red blood cell counts and hemoglobin levels did not differ (P < .05) between groups in either study. The date of sampling had a much more profound effect on the measurement of the resting parameters than did the conditioning program.
The final study examined 2,3-DPG levels during a single exercised bout in horses; along with comparing 2,3-DPG levels during exercise in the conditioned and unconditioned horse. Blood samples and heart rates were taken during a standard exercise test prior to and at the conclusion of a five week exercise program. Results showed an increase (P < .05) in heart rate, 2,3-DPG, lactic acid, hemoglobin levels and red blood cell counts at the trot as compared to resting levels in both conditioned and unconditioned horses. No difference (P < .05) in heart rate at the trot in either the pre or post exercise test was observed. A conditioning effect (P < .05) on 2,3-DPG levels was shown at the trot. Lactic acid levels after conditioning showed a decrease (P < .05) at the trot and during recovery. The best indicator of fitness was determined to be lactic acid levels at the trot.
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