Plasma [H+] responses to exercise in horses fed a high-fat diet and given sodium bicarbonate.

The research investigates how a high-fat diet and sodium bicarbonate supplementation affect the plasma hydrogen ion concentration in horses during exercise. The study examines different variables influencing this reaction.

Background

• The study is premised on the understanding that disruptions in plasma hydrogen ion concentration occur during exercise.
• This concentration is regulated by several factors such as the partial pressure of carbon dioxide, strong ion difference, and the concentration of total weak electrolytes.
• The study applies the laws of electrical neutrality, conservation of mass, and maintenance of dissociation equilibrium of weak electrolytes in solution.
• The paper aims at quantifying the impact of each independent variable on changes in plasma hydrogen ion concentration during horse activity.

Methodology

• Eight Arabian horses were introduced in the study and randomly assigned to either a control or a high-fat diet.
• The control diet involved chopped hay, cracked corn, molasses, and a vitamin supplement.
• In the high-fat diet, 10% of the food weight was corn oil replacing part of the energy provided by the cracked corn.
• The horses were fed to meet average energy and minimum nutrient requirements of horses engaged in moderate work, and each horse remained on the same diet throughout the study.
• The horses were subjected to two repeated sprint exercise tests where the exercise consisted of repeated 1-minute sprints.

The article’s primary aim is to understand the complex biochemical reactions within horses undergoing exercise, especially when under different dietary conditions. This understanding could potentially open doors for optimized horse care and performance tuning, particularly in areas like competitive horse racing.