Compared to the control group, wheat seed feeding increased
gizzard weight by 46.2 and 62.2% in treatment A and treatment B, respectively. Relative to
the control group, higher trypsin, -amylase and lipase activities were detected in the jenjunal digesta when the diets contained whole wheat. Dietary treatments did not cause any
differences in the viscosity of the intestinal contents and in the histological structure of the
small intestine.