Effect of tannins-rich extract from Acacia mearnsii or monensin as feed additives on ruminal fermentation efficiency in cattle - Perna Junior, Flavio; Cassiano, Eduardo Cuelar Orlandi; Martins, Maria de Fátima; Romero, L. A; Zapata, D. C. V; Pinedo, Lerner Arévalo; Marino, Carolina Tobias; Rodrigues, Paulo Henrique Mazza (Livestock Science, 2017)