What is rumen degradable protein ? – ScienceReport
Rumen degradable protein (RDP) is feed protein that can be broken down by microbial enzymes in the rumen (neutral pH) where the resulting nitrogen, AA’s or peptides are either utilized to meet microbial requirements or if unused, ammonia which is absorbed across the rumen wall and either recycled or excreted. Look up P. J. Van Soest “Nutritional Ecology of the Ruminant” in googlebooks for a more detailed description.