For example 10 mg/kg = 10 ppm. Escape Protein-see By-pass Protein or Undegradable Intake Protein. Digestible Protein (DCP) - the amount of crude protein (CP) actually absorbed by the animal (crude protein minus the protein lost in faeces).or example 10 mg/kg = 10 ppm. Escape Protein-see By-pass Protein or Undegradable Intake Protein. Digestible Protein (DCP) - the amount of crude protein (CP) actually absorbed by the animal (crude protein minus the protein lost in faeces).