de Carvalho, Paulo Reis, Katia Maria Vieira Avelar Bittencourt Cipolli, Rita de Cassia Salvucci Celeste Ormenese, Paulo Roberto Nogueira Carvalho, and Marta Gomes da Silva. “Supplementation Carotenoid Compounds Derived from Seed Integral Ground Annatto (Bixa Orellana L.) In the Feed Laying Hens to Produce Eggs Special”. Pakistan Journal of Nutrition 8, no. 12 (November 15, 2009): 1906–1909. Accessed September 4, 2025. https://pjnonline.org/pjn/article/view/1107.