Livestock Yeast- Animal Yeast- Ruminants Yeast 

Saccharomyces cerevisiae live yeast for ruminants (RumYeast®)

RumYeast® is live culture of probiotic yeast Saccharomyces cerevisiae strain SC14PM patented and registered of Zist Darman Mahan Co. 

Mode of action of RumYeast® 

Stabilization of ruminal microflora: 

Ruminal microflora is a complex system of bacteria, yeasts, fungi and protozoa that help to digest and absorb the feedstuff in anaerobic condition.  RumYeast® through the synergism effect stimulates the growth of beneficial microorganisms. Also through several antagonism mechanism inhibits the growth of harmful microorganisms. 

Ruminal pH stabilization: 

Decrease in ruminal pH and sub-acute ruminal acidosis (SARA) in high-carbohydrate rations is one of the most prevalent complications in dairy industry. RumYeast® through optimization of ruminal microbial condition, stimulating the growth of lactate utilizing bacteria, changing the biochemical pathways from lactate to propionate etc. leads to ruminal pH stabilization in optimal situation and inhibits SARA and its unwanted consequences. 

Enhancing digestion and absorption 

RumYeast® through enzyme and vitamin production, utilizing free oxygen, synergic effects on beneficial microorganisms specially cellulolytic microorganisms and their enzymatic activities leads to higher degradation of fibers, processing of feedstuff, short-chain fatty acids production, ammonia reduction and as a result leads to better weight gain, milk yield and higher milk fat and protein. 

Benefits of RumYeast® in ruminants: 

  • Stabilizing ruminal pH, metabolic acidosis risk reduction 
  • Stimulating normal ruminal floral growth 
  • Stimulating microbial enzymatic activities, enhancing cellulose and hemi-cellulose degradation 
  • Enhancing anaerobic activities in rumen 
  • Increasing milk protein 
  • Producing short chain fatty acids, Increasing milk fat 
  • Increasing milk yield 
  • Increasing dry matter intake in dairy cows 
  • Inhibiting weight reduction during milking period, Enhancing BCS 
  • Enhancing ruminal development in post-weaning calves 
  • Enhancing FCR 

Benefits of RumYeast® in other livestock: 

  • Enhancing FCR 
  • Inhibiting growth of pathogenic microorganisms 
  • Enhancing balance of GI microflora 
  • Enhancing immune system 
  • Producing essential enzymes and vitamins 
  • Enhancing digestion and absorption   

Dosage in ruminants: 

  • Beef cattle: 2-4 g/head daily 
  • Dairy cow: 4-6 g/head daily 
  • Stress conditions: 5-10 g/head daily 
  • Sheep and goat: 2-3 g/head daily 

Dosage in other livestock: 

  • 50-100 g/ton of chicken, turkey and aquatics feed
  • 100-200 g/ton of ostrich feed 


  •  10 kg bags and 1 kg pockets 

Total yeast count:

  •   1010 cfu/g  


Saccharomyces cerevisiae live yeast for ruminants




Saccharomyces cerevisiae live yeast for ruminants

Livestock yeast-Animal Yeast

Zist Darman Mahan Co.

Manufacturer of probiotic supplements for livestock, poultry and aquaculture




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