Effects of dietary chitosan on fat deposition and lipase activity in digesta in broiler chickens
1. The effect of dietary chitosan on fat deposition and lipase activity in the small intestinal contents was investigated in broiler chickens fed an adequate or high metabolisable energy (ME) diet.
2. Male broiler chickens at 14 d old were fed on the adequate or high ME diet supplemented with 0 or 50 g/kg chitosan, which has a low viscosity, for 3 weeks.
3. Dietary chitosan did not affect food intake, body weight gain or food efficiency in either dietary ME groups.
4. Dietary chitosan reduced the excessive abdominal fat deposition induced by the high ME diet.
5. Dietary chitosan increased the weight of intestinal concentration.
6. Dietary chitosan decreased the lipase activity per g of small intestinal contents.
7. These results suggest that dietary chitosan with low viscosity decreases lipase activity and fat absorption in the small intestine, consequently resulting in a reduction of fat deposition in broiler chickens.
8. It was concluded that dietary chitosan with low viscosity can decrease body fat deposition without reducing food intake and body weight gain in broiler chickens. contents irrespective of dietary ME
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