Feed is the main thing needed by breeders in the livestock business. The most needed source of feed for ruminants, such as the Pampangan Buffalo, is forage. Are bolong grass is a swamp forage which is abundant in availability, but its utilization is still very low for use by breeders. This study aims to determine the in vivo digestibility of NDF, ADF, and cellulose in pampangan buffalo rations …