SUPPLEMENTATION OF RDP (RUMEN DEGRADABLE PROTEIN) AND UDP (UNDEGRADABLE PROTEIN) IN SHEEP RATION AGAINST DEGRADATION OF DRY MATTER AND ORGANIC MATTER IN THE RUMEN IN VITRO. ANGON : J. Anim. Sci. Tech. 2022;4(1):1-6. doi:10.20884/1.angon.2022.4.1.p1-6