A comprehensive evaluation of four soybean meal (SBM ) products was conducted in five experiments.
Products were: solvent SBM (SSBM ), expeller SBM (ESBM ), lignosulfonate-treated SBM ( LSBM ), and SSBM treated with yeast before toasting (YSBM ).
In a 4 × 4 Latin square, 32 multiparous Holstein cows were used to investigate cow responsiveness to supplemental ruminally undegradable protein (RUP) from the SBM (Exp. 1).