Yeast are single-cell organisms that include over 1,500 unique species found naturally in soil, plants, fruit, and on the skin and in the intestinal tract of mammals.

Live yeast are used as probiotic supplements for horses, primarily to improve fibre digestion in the hindgut, bind toxins and support healthy intestinal tissue.

Horses that have disrupted hindgut function observed as diarrhea, constipation, fecal water syndrome, and horses on high-grain diets would likely benefit from yeast to support a healthy gut.

Other signs of impaired gut function include laminitis, poor coat and hoof quality, and frequent allergies.

The most common species of yeast used in animal feed are Saccharomyces cerevisiae, the same active culture used in baking and brewing. They are made up of several components that are known to benefit gut health including mannan-oligosaccharides, nucleotides and beta-glucans.

Yeast themselves are also high in digestible proteins, vitamins (vitamin B6, thiamin, biotin, riboflavin, nicotinic acid and pantothenic acid), magnesium and zinc. When they are digested in the hindgut these nutrients can be absorbed to support the health of the horse. [1]

Mad Barn’s gut health supplements Visceral+ and Optimum Digestive Health contain Yea-Sacc 1026™, a proprietary live yeast culture based on Saccharomyces cerevisiae strain 1026.

Optimum Digestive Health

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