R. Vidad, Sean, and Danilda H. Duran. 2022. “Energy Values of Corn and Rice Bran and Energy Levels for Ducks – Basis in Establishing Energy Requirement for Improved Philippine Mallard Duck”. CLSU International Journal of Science and Technology 6 (1):11-22. https://ijst.clsu.edu.ph/index.php/ijst/article/view/v6n1_02.