An experiment was conducted to determine the energy concentration in de-hulled full
fat soybeans (FFSB). Conventional (FFSB-CV; 435 g crude protein (CP)/kg and 241 g acid
hydrolyzed ether extract (AEE)/kg), high-protein (FFSB-HP; 502 g CP/kg and 205 g AEE/kg),
and low-oligosaccharide (FFSB-LO; 468 g CP/kg and 211 g AEE/kg) varieties of de-hulled
FFSB were used. The digestible energy (DE) and metabolizable energy (ME) in the 3 sources
of de-hulled FFSB were determined using 24 growing barrows (initial BW: 28.3
±
3.7 kg).
A corn-based basal diet and 3 diets containing corn and each source of de-hulled FFSB
were formulated. Pigs were placed in metabolism cages and randomly allotted to the 4
diets with 6 replicate pigs per diet. After a 5 d adaptation period, feces and urine were
collected for 5 d. The DE and ME in each source of de-hulled FFSB were calculated using
the difference procedure. The concentrations of DE and ME in de-hulled FFSB-CV, FFSB-HP,
and FFSB-LO were 18.8
±
1.17 and 17.4
±
1.36; 20.0
±
1.62 and 18.3
±
1.87; and 19.7
±
1.63
and 18.1
±
2.16 MJ/kg dry matter, respectively, but no significant differences among the 3
sources of de-hulled FFSB were observed. In conclusion, the same energy values can be used
for de-hulled high-protein and low-oligosaccharide varieties of soybeans as the values used
for de-hulled conventional soybeans.