The effect of thermal environment on the digestion of broilers

文献类型： 外文期刊

第一作者： Hai, L

作者： Hai, L;Rong, D;Zhang, ZY

作者机构：

期刊名称：JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION-ZEITSCHRIFT FUR TIERPHYSIOLOGIE TIERERNAHRUNG UND FUTTERMITTELKUNDE （ 影响因子：2.13； 五年影响因子：2.322 ）

ISSN： 0931-2439

年卷期： 2000 年 83 卷 2 期

页码：

收录情况： SCI

摘要： Two experiments were conducted to determine the effect of thermal environment on the digestion of broilers. In both experiments the birds were exposed to three temperatures: 5, 21, and 32 degrees C, and relative humidity was maintained at 60%. In experiment one, the amount of chyme in the whole digestive tract was decreased by the cold environment (5 degrees C, 60% relative humidity) and increased by hot environment (32 degrees C, 60% relative humidity), compared with control environment (20 degrees C, 60% relative humidity). The expelling of digesta from the crop or small intestine was suppressed by high temperature (32 degrees C) (p < 0.01). In experiment two, the activities of trypsin, chymotrypsin, and amylase were affected significantly by different environmental temperatures (p < 0.01). Compared to normal environment, the activities of the three kinds of enzymes in intestinal juice were decreased by the hot environment: trypsin (p < 0.01), chymotrypsin (p < 0.05), and amylase (p < 0.01), respectively. The activities of the three kinds of digestive enzyme were not influenced by the cold environment.

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