Nitrogenous compounds balance and microbial protein synthesis in steers supplemented with sunflower crushed in partial replacement of soybean meal - doi: 10.4025/actascianimsci.v35i3.18654. Acta Sci. Anim. Sci. 2013;35(3):301-306. doi:10.4025/actascianimsci.v35i3.18654