LOMU, M. Amaka; GLATZ, P.C.; RU, Y.J. Metabolizable Energy of Crop Contents in Free-range Hens. International Journal of Poultry Science, Pakistan, v. 3, n. 11, p. 728–732, 2004. DOI: 10.3923/ijps.2004.728.732. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/265. Acesso em: 23 sep. 2025.