EL-HUSSEINY , O.M.; SOLIMAN, A.Z.M.; EL-SHERIF, H.M.R.; FOUAD, A.M. Influence of Dietary Vitamin A, Zinc and Copper on Productive and Reproductive Performance of Broiler Breeders. International Journal of Poultry Science, Pakistan, v. 17, n. 3, p. 140–146, 2018. DOI: 10.3923/ijps.2018.140.146. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/2400. Acesso em: 23 sep. 2025.