Animal Science, Department of


Date of this Version

January 2000


Published in Nebraska Beef Cattle Report 2000, published by Agricultural Research Division, University of Nebraska Cooperative Extension, and Institute of Agriculture and Natural Resources, University of Nebraska–Lincoln.


The metabolizable protein (MP, % of CP) concentrations of the following three treated soybean meal (SBM) products and commodity SBM were estimated: nonenzymatically browned SBM (Soy Pass®), expeller SBM (SoyPlus®), and a heated SBM:soyhull mixture (AminoPlus®). Separate lots of each product were measured in two separate trials. Commodity SBM yielded consistent MP values, while treated SBM products differed by 11- 58% in MP. Differences in MP appear to be due to differences in undegraded intake protein (UIP) concentration. The UIP concentrations of treated SBM products merits regular monitoring.