Studies on West African dwarf sheep fed on basal hay or hay plus concentrates of varying protein contents. II-Concentrations of nitrogen fractions in the rumen, plasma urea nitrogen and amino acid composition of ruminal micro-organisms. Tropical Agriculture, [S. l.], v. 54, n. 4, 1977. Disponível em: https://journals.sta.uwi.edu/ojs/index.php/ta/article/view/3091. Acesso em: 9 feb. 2025.