| To determine the effect of origin on the nutritional value of soybean meal (SBM) fed to growing pigs or broilers, 6 experiments were conducted. The sources of SBM used in Exp. 1, 2, and 3 were the same and were procured from crushing facilities throughout the U.S. For analysis, crushing plant locations were separated into 4 zones: 1) northern growing area (MI, MN, and SD), 2) eastern growing area (GA, IN, and OH), 3) western growing area (IA, MO, and NE), and 4) IL. The objective of Exp. 1 was to determine concentrations of DE, ME, and NE in SBM produced in different areas of the United States when fed to growing pigs. The objective of Exp. 2 was to determine the apparent ileal digestibility (AID) and standardized ileal digestibility (SID) of AA in SBM produced in different regions of the United States when fed to growing pigs. The objective of Exp. 3 was 1) to determine if the area in which soybeans are grown influence the concentration of P, phytate, and macro and micro-minerals in the SBM produced from the beans, and therefore, also influence the apparent total tract digestibility ( ATTD) and standardized total tract digestibility (STTD) of P in SBM, and 2) to test the hypothesis that inclusion of microbial phytase will increase the ATTD and STTD of P in SBM. The objective of Exp. 4 was to determine the AID and SID of AA by weanling pigs in 4 sources of fermented SBM (FSBM A, B, C, and D) and to compare these values to the digestibility of AA in conventional SBM, fishmeal, and poultry by-product meal (PBM ). The objectives of Exp. 5 and 6 were to determine the concentrations of nitrogen-corrected apparent metabolizable energy (AMEn) as well as AA digestibility in the 8 sources of SBM when fed to broiler chicks. In conclusion, origin of SBM may affect its nutritional value when fed to growing pigs or broilers. (Abstract shortened by UMI.). |
