EL-HUSSEINY, O.M.; SOLIMAN, A.Z.; OMARA, I.I.; EL-SHERIF, H.M.R. Evaluation of Dietary Methionine, Folic Acid and Cyanocobalamin (B12) and Their Interactions in Laying Hen Performance. International Journal of Poultry Science, Pakistan, v. 7, n. 5, p. 461–469, 2008. DOI: 10.3923/ijps.2008.461.469. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/978. Acesso em: 23 sep. 2025.