Development and Implementation of a Chopper Machine to Improve the Quality of Chopped Grass for Sheep Feed in the Muhammadiyah Agribusiness CentreRinasa Agistya Anugrah, Agus Widyianto, Mulyono and Ferriawan YudhantoBIO Web Conf., 137 (2024) 01013DOI: https://doi.org/10.1051/bioconf/202413701013