MAYAHI, Mansour; ABADSHAPORY, Masghoud Reza Saify; NAJAFZADEH, Hossain; KEFAYAT , Marzieh. Effect of Dietary Supplementation of Echinacea purpurea on the Humoral Immune Response Against Newcastle Disease Vaccine in Broiler Chicks. International Journal of Poultry Science, Pakistan, v. 10, n. 11, p. 904–907, 2011. DOI: 10.3923/ijps.2011.904.907. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/1722. Acesso em: 22 sep. 2025.