Non-Invasive Measurement of Cortisol Metabolite in Feces of Toraya Buffalo by Using Enzyme Immunoassay TechniqueGholib Gholib, Fatri H.R.A. Pampang, Triva M. Lubis, Mulyadi Adam, Muhammad Jalaluddin, Razali Razali, Azhar Azhar and Teuku F. KarmilE3S Web Conf., 151 (2020) 01061DOI: https://doi.org/10.1051/e3sconf/202015101061