Effect of a raw saponin extract on ruminal microbial population and in vitro methane production with star grass (Cynodon nlemfuensis) substrate - Galindo, Juana; González, Niurca; Abdalla, Adibe Luiz; Alberto, Mariem; Lucas, R.C; Santos, K.C; Santos, M. Regina; Louvandini, P; Moreira, O; Sarduy, Lucía (Cuban Journal of Agricultural Science, 2016)