Possibility of using131I-albumin as a marker for the estimations of microbial protein synthesis rates in the rumen

Summary Total microbial protein synthesis rates in the rumen of buffaloes were estimated by isotope dilution technique, using¹³¹I-albumin treated with tannic acid as a marker. The animals were fed groundnut cake treated with formaldehyde to meet 50% of their digestible crude protein (DCP) requirement and 2.5% urea molasses mixture was given to meet the remaining requirement of DCP. Wheat straw was fed as the basal roughage. The total average microbial protein synthesis was 58.14 g/day.