Puangkhum, Chudapun, Choawit Rakangthong, Theerawit Poeikhampha, Kanokporn Poungpong, and Chaiyapoom Bunchasak. “Effect of Supplemental Multi-Enzymes in the Diet of Meat-Type Ducks on Production Performance, Carcass Yields and Gastrointestinal Morphology”. International Journal of Poultry Science 18, no. 12 (November 15, 2019): 648–655. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/2567.