This study aims was to determine the pattern of NDF degradation in swamp grass (Kumpai Tembaga, Kumpai Minyak, and Kumpai Padi) by In-sacco. This research was conducted from February to July 2020 at the Laboratory of Animal Husbandry Study Program, Faculty of Agriculture, Sriwijaya University and Animal Nutrition and Forage Laboratory of Animal Husbandry Study Program, Faculty of Agriculture, S…