Sandi, Sofia, Fitra Yosi, and Miksusanti. “Performance and Protein Efficiency Ratio of Starter Phase Pegagan Ducks Fed Fermented Rations Made from Locally Sourced Materials”. Pakistan Journal of Nutrition 15, no. 3 (February 15, 2016): 268–273. Accessed August 26, 2025. https://pjnonline.org/pjn/article/view/2304.