Hm. Edwards et al., Protein and energy evaluation of soybean meals processed from genetically modified high-protein soybeans, POULTRY SCI, 79(4), 2000, pp. 525-527
A conventional and two genetically modified soybean samples were processed
to dehulled soybean meal (SBM) at a pilot plant and were compared with SBM
from a commercial processing plant. Crude protein levels (%) of the experim
ental SBM samples were M700, 52.5; M702, 53.4; and M703, 62.7. The commerci
al SBM sample (UI) contained 47.5% protein. Amino acid, gross energy, lipid
, and fiber analyses were carried out, and true metabolizable energy and tr
ue amino acid digestibility were determined with adult cecectomized cockere
ls. Digestible Lys, Met, Cys, Thr, and Val, and also TMEn, were higher (P <
0.05) and NDF, fat, and phospholipids were lower in M703 than in the other
SBM samples. The results of this study indicate that M703 has considerable
advantages over conventional SBM as a feed ingredient for broiler chickens
.