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  Brewers Yeast                        
  For Dairy Cows                        
                               
                               
      Typical Analysis As Fed     Take Home Messages        
    Dry Pressed Slurry   Your DM%                  
                               
  DM% 100% 26% 12%   12%   * Donít Pay more than a Soya Equivalent price per Load  
  CP 51.11 13.29 6.13   6.13   * Think about storage - it costs        
  CF 1.67 0.43 0.20   0.20   * Get a reliable supply - feed within 1-2months    
  Oil 1.67 0.43 0.20   0.20   * Its Alcoholic, introduce gradually, donít over feed  
  Ash 10.00 2.60 1.20   1.20   * Suggested Maximum feed level when fed as Soya 1 kg DM
  Ca 0.11 0.03 0.01   0.01   * May give a 3-5% Increase in Yield to heavy cake feeders  
  P 2.67 0.69 0.32   0.32                  
  Na 0.11 0.03 0.01   0.01                  
  DE (Pigs) 17.22 4.48 2.07   2.07                  
  Lysine 3.33 0.87 0.40   0.40                  
                               
                               
  Comparison simply based on current Soya price            
                               
  Soya Price       £155   Comparison does not consider the Yeasts Microbial effect  
  Recommended DM 100-250g   200g   Onn average a yield response may be in the order of  
  Herd Size Milked     250   3% -5% over the whole lactation for D.Cows ie 240-400L  
                before any effect on milk quality considered      
                               
  Feed Out Rates and Price to Pay                  
                               
  25T 20T 15T 10T       Load Size            
                               
  3.3T 2.7T 2.0T 1.3T       Weight Soya Equivalent          
  £517 £413 £310 £207       Maximum to pay per Load        
  1.7kg 1.7kg 1.7kg 1.7kg       Fresh Weight Fed Per Cow Per Day      
  15000 12000 9000 6000       Cow Days            
  60 48 36 24       Herd Days            
  3.4p 3.4p 3.4p 3.4p       Cost per cow per day          
  8-10p 8-10p 8-10p 8-10p       Comparative Commercial Microbial Cost      
                               
                               
  Notes                            
                               
  Brewers Yeast works much in the same way as commercial microbials such as Diamond VXP etc    
  changing rumen fermentation patterns to the benefit of production          
  1% on a DM Basisof the diet is equivalent to a similar level of the Yeast extract materials as above    
  Digestive upsets in pigs are resolved by boiling, propionic acid or ammonium tetraformate treatment.  
                               
                               
  American work Henri Middelveld et al '98            
  Yeast supplementation increased digestion of a mixed diet by five percentage units.      
  Both yeast culture and brewers dried yeast gave the same effect.          
  Diet Digestibility increased linearly with yeast addition in the 0.0625 to 1.00 percent of dietary dry matter range
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