Budiansyah, A., Resmi, R., Filawati, F., & Haroen, U. (2020). Performance of Kerinci Ducks Treated by Cattle Rumen-Fluid Supernatant Addition as Source of Crude Enzyme in Rations. Tropical Animal Science Journal, 43(2), 125-132. https://doi.org/10.5398/tasj.2020.43.2.125