Lizana , Rony Riveros, Otto Zea Mendoza, and Carlos Vilchez Perales. “Evaluation of Tarsus Pigmentation in Chickens Fed With Different Levels of Xanthophyll Pigment: A Practical Application of the CIELab System”. International Journal of Poultry Science 19, no. 6 (May 15, 2020): 265–269. Accessed September 22, 2025. https://ijpsjournal.org/index.php/ijps/article/view/2600.