Department of Animal and Poultry Health and Nutrition, Faculty of Veterinary Medicine, University of Tehran, Azadi Avenue, Tehran, Iran.
J Anim Physiol Anim Nutr (Berl). 2012 Feb;96(1):47-51. doi: 10.1111/j.1439-0396.2010.01120.x. Epub 2011 Jan 19.
In an experiment, the possible influence of tannic acid (TA) and polyethylene glycol (PEG) on the absorption capacity of intestine for d-xylose and β-carotene in broiler chicken was investigated. Four groups of nine 28-day-old broiler cockerels received d-xylose (500 mg) and β-carotene (52 μg) solutions (Group 1 to 4) with TA (1 g, Group 2 to 4) and PEG (500 mg Group 3 and 1 g Group 4), orally. One blood sample prior to, and four others after the administration of test materials, were collected from wing vein on 40 min basis, for 160 min and the concentration of plasma d-xylose was determined. The concentration of β-carotene was also measured in plasma of blood samples taken prior to and 160 min post-administration of the test materials. Plasma d-xylose concentration of all groups showed quadratic correlations with time (p < 0.001, r(2) = 0.84, 0.60, 0.70 and 0.74 for Group 1 to 4, respectively). Administration of TA reduced the plasma concentration of d-xylose in Group 2. However, feeding PEG after TA raised the concentration of d-xylose in Group 4 to the level that there was no difference in that variable between this group and Group 1. Although the plasma concentration of β-carotene was increased in 160 min post-ingestion of the test material, no difference was found in that variable among the experimental groups. In conclusion, TA and its interaction with PEG have impacts on the absorption capacity of intestine for d-xylose and highly likely other simple sugars, but TA or PEG have no influence on the absorption of β-carotene and most probably other fat soluble vitamins.
在一项实验中，研究了单宁酸（TA）和聚乙二醇（PEG）对肉鸡肠道对木糖和β-胡萝卜素吸收能力的可能影响。将四组 9 只 28 日龄的肉鸡公鸡分别给予木糖（500mg）和β-胡萝卜素（52μg）溶液（第 1 至 4 组），并分别添加 TA（1g，第 2 至 4 组）和 PEG（500mg 第 3 组和 1g 第 4 组），口服。在给药前和给药后 40 分钟，从翅静脉采集 1 个血样，共采集 160 分钟，测定血浆木糖浓度。在给药前和给药后 160 分钟采集的血液样本中还测量了血浆β-胡萝卜素的浓度。所有组的血浆木糖浓度均与时间呈二次相关（p<0.001，r²=0.84、0.60、0.70 和 0.74，分别为第 1 至 4 组）。第 2 组 TA 的添加降低了血浆木糖浓度。然而，在 TA 之后添加 PEG 将第 4 组的木糖浓度提高到与第 1 组无差异的水平。尽管在摄入试验物质 160 分钟后，血浆β-胡萝卜素浓度增加，但实验组之间该变量无差异。总之，TA 及其与 PEG 的相互作用会影响肠道对木糖和其他简单糖的吸收能力，但 TA 或 PEG 对β-胡萝卜素和其他脂溶性维生素的吸收没有影响。
