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Customer Service: 972.996.6965, or email: info@feedsources.com

MannaMax – OMRI Listed


Combines the benefits of live yeast with health & immune response of cell wall in one product. For use in beef, dairy, swine and poultry feed. Packaged in 50 lb bags.

      ** Approved for Organic Use     

INCLUSION RATE: For dairy & beef – 0.5 oz/hd/day
(Contacts us for additional feeding rates)

Packaged in 50 lb. bags.


Call Us to Order at 972.996.6965,
or email: info@feedsources.com

*1 ton minimum order. Call or email for LTL pricing

MannaMax - OMRI Listed - Live Yeast and Yeast Cell Wall Immune Response Supplement

** Approved for Orgainic Use   

Mannamax OMRI Listed combines the immune support of yeast cell wall extract with the rumen balancing effects of live active yeast.   Yeast cell wall, is a natural component derived from Saccharomyces cerevisiae with numerous benefits in livestock animal health.  Beta-glucan and mannan derived from yeast cell wall increase immunity, block pathogens and bind potentially harmful substances.  All this translates into improved animal performance.

In particular, beta-glucan has an established role in enhancing the strength of the immune system and preventing serious diseases by binding to surface receptors on immune cells thereby activating a sequence of events all targeted at enhancing immunity and the response to harmful pathogens.  Mannan works as a binder of harmful bacteria and molecules.  Once bound, these harmful elements leave the animal through the feces preventing infection.

Dry active yeast improves the energy balance in your livestock, maintains optimal digestion and health during the numerous transition periods in cattle.  Rumen acidosis is a common problem due to ingestion of rapidly fermented carbohydrates.  The acidosis worsens as various lactate producing bacteria become more abundant in the rumen leading to decreased feed digestion and nutrient extraction.  Numerous methods have been attempted to restore proper microbial balance to the rumen to prevent rumen acidosis with feeding of live active yeast being the most common and efficient.  Saccharomyces cerevisiae live yeast promotes lactate-utilizing bacteria activity while decreasing lactate-producing bacteria activity decreasing acidosis.  Restoring a normal rumen pH allows efficient digestion and nutrient extraction.

Together beta-glucan and mannan reduce mortality, lessen the need for antibiotics and eliminate harmful substances.   As a result there is improved rumen development and microbial growth, improved daily gain, increased dry matter intake and improved animal performance.  Live yeast supplement also helps maintain correct rumen function and microbial balance, better fiber degradation and energy release.  Additionally, these cattle had a shorter time to ovulation, increased milk yield, milk protein, milk fat and weight gain.  Mannamax helps maintain feed efficiency, nutrient extraction and immune support for the overall health and productivity of the animal.

Component Analysis

Yeast Cell Wall Extract
Moisture………………………………< 8.0%

Live Active Dried Yeast
> 15 Billion CFU / 0.50 oz Saccharomyces cerevisiae

Feeding Recommendations

  • Mix into grain or protein mixes or total mixed ration to provide an even distribution of 0.5 oz/head/day.
  • For specific feeding recommendations, always consult with a nutrition advisor.

Storage & Handling

  • Store product in a cool dry area. Avoid inhalation.
  • Shelf life: 24 months from date of manufacture.

Ordering & Technical Information

  • Packaging: 50 lb. bags with vapor barrier.