The potential by-product of Indonesian superior native chicken Nurul Agustini, Totok B Julianto, I Putu Cakra Putra Adnyana and Luh Gde Sri Astiti E3S Web Conf., 306 (2021) 02021 Published online: 24 September 2021 DOI: 10.1051/e3sconf/202130602021