1. Energy values and protein digestibility of soybean milk by-product in pigs based on in vitro assays
- Author
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Jung-Yeol Sung, Bokyung Hong, Youngeun Song, and Beob-Gyun Kim
- Subjects
alternative feedstuffs ,digestibility ,energy ,feed byproduct ,in vitro assay ,pig ,protein ,soybean milk by-product ,soy byproduct ,swine ,trypsin inhibitor ,Animal culture ,SF1-1100 - Abstract
Background: Soybean milk by-product (SMBP) is a potential alternative feed ingredient in swine diets due to its high protein content. However, information on energy and nutritional values of SMBP used as swine feed ingredient is limited. Objective: To estimate energy values and protein digestibility of SMBP in pigs based on in vitro assays. Methods: Four SMBP samples were obtained from 3 soybean milk-producing facilities. In vitro total tract disappearance (IVTTD) and in vitro ileal disappearance (IVID) of dry matter (DM) in the SMBP samples were determined. In vitro ileal disappearance of crude protein was determined by analyzing crude protein content in undigested residues after determining IVID of DM. Digestible and metabolizable energy of SMBP were estimated using gross energy, IVTTD of DM, and prediction equations. Results: Sample 4 had greater IVTTD of DM than that of sample 3 (97.7 vs. 94.4%, p
- Published
- 2020
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