KIM, J.H.; PATTERSON, P.H.; KIM , W.K. Impact of Dietary Crude Protein, Synthetic Amino Acid and Keto Acid Formulation on Nitrogen Excretion. International Journal of Poultry Science, Pakistan, v. 13, n. 8, p. 429–436, 2014. DOI: 10.3923/ijps.2014.429.436. Disponível em: https://ijpsjournal.org/index.php/ijps/article/view/2074. Acesso em: 23 sep. 2025.