Yeast for Ruminants: Improving Rumen Health, Feed Efficiency and Animal Performance

Yeast for Ruminants: Improving Rumen Health, Feed Efficiency and Animal Performance

In modern dairy and beef production, maintaining optimal rumen function is essential for animal health, feed efficiencyand productivity. Nutritional stress, high-concentrate diets, heat stress and management challenges can disrupt rumen balance, reducing fibre digestion and increasing the risk of acidosis.

For this reason, yeast-based feed additives have become an important tool in ruminant nutrition. Through different mechanisms of action, live yeast, yeast cell walls, autolysed yeast and inactivated yeast can support rumen stability, improve nutrient utilisation and strengthen animal resilience.

With over 40 years of experience in yeast technologies, Mazzoleni has developed a complete range of yeast-based solutions designed to support dairy cows, beef cattle and young ruminants.

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Why Yeast is Important in Ruminant Nutrition

The rumen hosts billions of microorganisms responsible for digesting fibre and converting feed into valuable nutrients. Maintaining a stable microbial ecosystem is crucial for maximising productivity and animal welfare.

Yeast products can support rumen function by:

  • Promoting the growth of fibre-digesting bacteria
  • Enhancing fibre digestibility
  • Improving feed conversion efficiency
  • Stabilising rumen pH
  • Supporting microbial protein synthesis
  • Reducing the risk of ruminal acidosis
  • Strengthening immune response and gut health

Mazzoleni’s Research and Innovation in Live Yeast

Mazzoleni’s commitment to precision nutrition led to the development of an innovative live yeast strain specifically selected for animal nutrition.

This work resulted in the identification of Saccharomyces cerevisiae DBVPG 48 SF, the strain used in BioCell®, officially authorised for use in ruminants, pigs and horses.

Ruminase®: Inactivated Yeast for Fibre Digestion and Feed Efficiency

What is Ruminase®?
Ruminase® is a selected and purified inactivated brewer’s yeast based on Saccharomyces cerevisiae.

How Ruminase® Works
Ruminase® acts as a natural prebiotic, supplying vitamins, growth factors and nutrients that stimulate beneficial microbial populations.

Its action helps:

  • Improve nutrient utilisation
  • Support rumen microbial balance
  • Increase microbial protein production
  • Enhance fibre degradation
  • Improve dry matter digestibility
  • Contribute to rumen pH stability
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Echomos®: Yeast Cell Walls for Immunity and Mycotoxin Management

What is Echomos®?
Echomos® consists exclusively of purified cell walls from Saccharomyces cerevisiae, naturally rich in β-glucans and MOS (mannan-oligosaccharides).

How Echomos® Works
The combination of β-glucans and MOS supports both gut health and immune function.

Key actions include:

  • Supporting immune response
  • Enhancing phagocytic activity
  • Promoting intestinal health
  • Binding selected mycotoxins
  • Reducing intestinal toxic load
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BioCell®: Live Yeast for Rumen Stability and Dairy Performance

What is BioCell®?
BioCell® is Mazzoleni’s proprietary live yeast additive based on the authorised strain Saccharomyces cerevisiae DBVPG 48 SF.

How BioCell® Works
BioCell® promotes an optimal rumen environment by:

  • Removing oxygen from the rumen
  • Supporting anaerobic fermentation
  • Stimulating fibrolytic bacteria
  • Enhancing L-lactate utilisation
  • Helping maintain rumen pH stability

Benefits of BioCell®
Field studies have demonstrated:

  • Increased milk production
  • Improved feed efficiency
  • Better fibre utilisation
  • Enhanced average daily gain (ADG)
  • Improved feed conversion ratio
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Autolysed Yeast F55®: Highly Digestible Protein for Livestock Nutrition

What is Autolysed Yeast F55®?
Autolysed Yeast F55® provides a concentrated source of highly digestible protein derived from Saccharomyces cerevisiae.

Nutritional Characteristics
Autolysed Yeast F55® contains:

  • More than 50% crude protein
  • Essential amino acids
  • High levels of lysine, leucine and methionine

Benefits of Autolysed Yeast F55®
Autolysed Yeast F55® helps nutritionists formulate balanced diets by providing:

  • Highly digestible protein
  • Improved feed palatability
  • Nutritional support for gut health
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Building Effective Yeast-Based Feeding Strategies

Each yeast product offers unique functional benefits:

ProductPrimary Function
BioCell®Live yeast for rumen stability and feed efficiency
Ruminase®Inactivated yeast supporting microbial activity and fibre digestion
Echomos®Yeast cell walls supporting immunity and mycotoxin management
Autolysed Yeast F55®Autolysed yeast providing digestible protein and amino acids
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Mazzoleni Yeast Solutions: Science Supporting Sustainable Performance

Mazzoleni’s yeast portfolio combines decades of experience with advanced scientific research to provide effective nutritional solutions for modern livestock farming.

Through improved fibre digestibility, better rumen pH control, enhanced immune resilience and increased feed efficiency, BioCell®, Ruminase®, Echomos® and Autolysed Yeast F55® help farmers achieve sustainable productivity and long-term animal performance.