RAHMANI, H.R.; SPEER, W. Natural Additives Influence the Performance and Humoral Immunity of Broilers. International Journal of Poultry Science, Pakistan, v. 4, n. 9, p. 713–717, 2005. DOI: 10.3923/ijps.2005.713.717. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/416. Acesso em: 22 sep. 2025.