Colon flora

The colon is home to a wide range of microorganisms. In horses, these are predominantly cellulose-splitting bacterial strains, protozoa (single-celled organisms) and fungi. They break down the complex cell walls of lignified roughage and predominantly produce so-called volatile fatty acids (VFAs), which serve the horse as its main energy source.

Protein from lignified grass stems, on the other hand, is used by the bacteria for their own reproduction. The amino acids from this protein are no longer available to the horse.

Intact colon flora is also necessary for vitamin supply, as the microbes produce B vitamins, thereby securing the horse's self-sufficient supply.