The effect of diets containing different levels ofstructural substances on morphological changes inthe intestinal walls and the digestibility of the crudefibre fractions in geese (Part III)

Two experiments were conducted with 270 growing geese fed complete diets differing in the source and content of carbohydrates and structural fractions. The experimental diets contained similar levels of crude fibr provided by different proportions of one of the following components: corn (50%), dried grass (20%), oats (65%), beet pulp (31%), rye (50%), barley (60%), field bean, pea or rapeseed meal (20% each). The level of the crude fibr in the experimental diets was twice as high as in the control diet. The digestibilities of the structural fractions in the smali and large intestine were determined with the indicator method. Morphological changes in the walls of intestine were examined in birds slaughtered at 1 and 2 h after feeding.