Effect of Feeding Bypass Protein on Rumen Fermentation Profile of Crossbred Cows

  • Kalbande, V.H. (Department of Animal Nutrition, Kerala Agricultural University) ;
  • Thomas, C.T. (Dept. of Animal Nutrition, College of Veterinary & Animal Sciences)
  • Received : 2000.02.02
  • Accepted : 2001.02.02
  • Published : 2001.07.01


The effect of three varying ratios (high, medium and low) of Rumen Degradable Protein (RDP) to Undegradable Dietary Protein (UDP) of 37:63, 52:48 and 70:30 in iso-nitrogenous and iso-caloric concentrate mixtures on rumen fermentation profile was studied using rumen fistulated Jersey crossbred cows. Rumen pH and ammonia nitrogen concentration were found to be lower with a concentrate mixture containing a higher UDP level of 63.38% when compared with those having medium and low UDP levels of 47.55 and 29.75%, respectively, at all post feeding intervals. Total volatile fatty acid concentration as well as concentrations of individual fatty acids viz., acetate, propionate and butyrate were also found higher in animals fed concentrate mixture with the highest UDP level.


By-Pass Protein;Crossbred Cows;Rumen Fermentation Profile