Falculan, Ken. “Quality of Upgraded Layer Fed With Different Levels of Annatto Seeds (Bixa Orellana L.) As Feed Supplement Raised under Different Housing Conditions”. Technium BioChemMed 2, no. 2 (July 27, 2021): 125–138. Accessed April 18, 2026. https://www.techniumscience.com/index.php/biochemmed/article/view/3778.