Energy balance and methane emission prediction in Simmental Cross-breed Cattle Feeding different types of forages and concentratesAzka Nuruzzaman, Yuli Yanti, Sulistyo Sulistyo and Susi Dwi WidyawatiE3S Web Conf., 467 (2023) 04007DOI: https://doi.org/10.1051/e3sconf/202346704007