Albino, L.F.T. et al. 2014. Tryptophan and energetic availability of some feedstuffs determined with young and adult chicken. Pesquisa Agropecuaria Brasileira. 22, 11/12 (Apr. 2014), 1301–1306. DOI:https://doi.org/10.1590/S1678-3921.pab1987.v22.14725.