There
was evidence of a positive effect of Natustarch® on the digestibility of
dietary wheat starch; however, the addition of the Natugrain-blend®
did not enhance the digestibility of diets containing wheat or lupin.
These authors suggested that the inefficacy of Natugrain-blend® may
be caused by the inability of silver perch to tolerate high levels of galactose
and xylose in the blood.Moreover, although the digestibility of raw
starch was improved by the addition of Natustarch®, digestibility of
gelatinized starch was not affected.