D-Xylose absorption capacity of broiler intestine in response to phytic acid.
1. Dietary phytic acid (PA) reduces the apparent digestion and of dietary nutrients, increases the excretion of endogenous amino acids and minerals and reduces the concentration of blood glucose. 2. An experiment was conducted to examine the effect of phytic acid on the absorption capacity of the intestine in broiler chicken, using a D-xylose absorption test. 3. Three groups of ten 26-d-old apparently healthy broiler cockerels (Ross 308) were dosed with D-xylose solution (500 mg/kg BW, Group 1) or D-xylose solution + PA (330 or 660 mg/5 ml/bird, in groups 2 and 3), respectively. The plasma concentration of D-xylose was measured at 40-min intervals after ingestion of test materials, for a total of 160 min. 4. There was a quadratic correlation between the concentration of plasma D-xylose and time in all experimental groups (P < 0001, R(2)= 078, 080 and 081 for groups 1-3, respectively). Ingestion of PA at 660 mg reduced the concentration of plasma D-xylose by 216 and 105% at 40 and 80 min after ingestion of the test material, indicating a lower absorption of this sugar. 5. It was concluded that dietary phytates might affect the productive performance of chicken, at least partly, by disturbing the transport mechanisms involved in the absorption of nutrients.
Mansoori
B
B
Department of Animal and Poultry Health and Nutrition, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran. mansoori61@yahoo.co.uk
D000818:Animals; D002645:Chickens / Q000502:physiology*; D007408:Intestinal Absorption / Q000502:physiology*; D007422:Intestines / Q000502:physiology*; D008297:Male; D010833:Phytic Acid / Q000494:pharmacology*; D012044:Regression Analysis; D014994:Xylose / Q000097:blood / Q000502:physiology*
D010833:Phytic Acid; D014994:Xylose