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Improvement of the nutritional value of soybean meal by protease and alpha-galactosidase treatment in broiler cockerels and broiler chicks. Scottish researchers tube-fed cockerels to measure the
effect of different enzyme treatments on true metabolizable energy and
nitrogen digestibility of commercial solvent-extracted soybean meal.
They found that one protease from Aspergillus niger and an alpha-galactosidase
from Asperillus oryzae improved true metabolizable energy and true nitrogen
digestibility. The enzyme response was non-linear with the greatest
response occurring with the lowest enzyme treatments. When the two enzymes
were fed together the response was less than expected when fed alone.
A chick growth study confirmed the tube-feeding experiments. The researchers
concluded that the nutritional value of soybean meal could be improved
by protease and alpha-galactosidase treatment. |
