3 February, 2025

A Digestive Health Guide for the Performance Horse

A Digestive Health Guide for the Performance Horse

The horse's digestive system, particularly the hindgut, functions as a massive "fermentation chamber." When the balance of this chamber is disrupted by competition stress, travel, or high-grain diets, the horse faces issues ranging from decreased performance to severe diarrhea.

I. Active Live Yeast (Saccharomyces cerevisiae) – The Probiotic

The use of Active Live Yeast—as opposed to common inactive feed yeast—is the key.

  • Mechanism: Upon reaching the gut, the live yeast activates and consumes excess oxygen, creating an ideal anaerobic environment for beneficial bacteria.

  • pH Stabilization: It prevents a drop in pH (acidosis). Acidosis is the primary culprit behind irritability, back tension, and poor hoof quality.

  • Benefit: The horse remains calm, with a healthy digestive tract and maximum nutrient absorption.

II. MOS & FOS – The Prebiotics (The "Allies")

Prebiotics are not live organisms, but specialized carbohydrates that support the existing flora.

  • MOS (Mannan-oligosaccharides): These act as "pathogen magnets." They bind harmful bacteria (such as Salmonella and E. coli) and remove them from the body through manure before they can cause inflammation.

  • FOS (Fructo-oligosaccharides): These serve as exclusive "food" for beneficial microorganisms (Lactobacilli). They increase the digestibility of hay fibers, allowing the horse to maintain weight even during intense training.

Addressing Diarrhea & Digestive Issues

In cases of acute or chronic diarrhea, the action of this combination is catalytic:

  1. Immediate Repopulation: Live yeast "crowds out" the pathogens causing the diarrhea.

  2. Fluid & Electrolyte Retention: By stabilizing the flora, the gut regains the ability to absorb water correctly, stopping the fluid loss that leads to dehydration.

  3. Post-Antibiotic Recovery: Antibiotics kill both good and bad bacteria. Administering Live Yeast with MOS/FOS is essential to "rebuild" the gut from scratch.