Potential of sago hampas for ruminants feed Heru Ponco Wardono, Ali Agus, Andriyani Astuti, Nono Ngadiyono and Bambang Suhartanto E3S Web Conf., 306 (2021) 05012 Published online: 24 September 2021 DOI: 10.1051/e3sconf/202130605012