
VidEst | BigStock.com
Most discussions about bypass protein focus on what escapes the rumen. But what really matters is what happens to the protein that doesn’t. Microbes need a steady supply of nitrogen — not all at once, not too late. Balancing rumen-degradable protein (RDP) and rumen-undegradable protein (RUP) is the difference between efficient microbial growth and wasted ammonia.