AWONIYI, T.A.M. The Effect of Housing on Layer-chicken’s Productivity in the 3-tier Cage. International Journal of Poultry Science, Pakistan, v. 2, n. 6, p. 438–441, 2003. DOI: 10.3923/ijps.2003.438.441. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/128. Acesso em: 22 sep. 2025.