Robbins, D.H., and J.D. Firman. “Evaluation of the Metabolizable Energy of Poultry By-Product Meal for Chickens and Turkeys by Various Methods”. International Journal of Poultry Science 5, no. 8 (July 15, 2006): 753–758. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/617.