What is Yeast?

Yeasts are microscopic fungi, single cell organisms, which are 5-10 microns in size. They are abundant throughout the environment. Even though there are 60 known genera of yeasts, there are hundreds of different strains. These strains vary in their genetic makeup, as well as their effectiveness and consistency.

Yeasts have been fed to animals for more than a century, although there is still much to learn about their possible agronomic uses. Today, there are many yeast products available to beef and dairy producers and they vary greatly, not only genetically, but also in terms of benefit and value to the ruminant.

History of Yeast in Animal Nutrition

Types of Yeast