Thermoregulation responses of broiler chickens to humidity at different ambient temperatures. I. One week of age

文献类型： 外文期刊

第一作者： Lin, H

作者： Lin, H;Zhang, HF;Jiao, HC;Zhao, T;Sui, SJ;Gu, XH;Zhang, ZY;Buyse, J;Decuypere, E

作者机构：

关键词： thermoregulation;broiler chicken;humidity;ambient temperature

期刊名称：POULTRY SCIENCE （ 影响因子：3.352； 五年影响因子：3.679 ）

ISSN： 0032-5791

年卷期： 2005 年 84 卷 8 期

页码：

收录情况： SCI

摘要： Three trials were conducted to investigate the effect of RH (35, 60, and 85%) on thermoregulation of 1-wk-old broiler chickens at different temperatures (35, 30, and 25 degrees). The response to humidity in rectal temperature and plumage temperature at the back and breast within 24 h after exposure were recorded at 5 time points (1, 4, 8, 16, and 24 h). Humidity affected the thermoregulation of 1-wk-old broiler chickens by redistributing heat within the body at high, low, and thermoneutral temperatures. The redistribution of heat resulted in decreased rectal temperature and increased peripheral temperature, which were, respectively, beneficial and unfavorable at high and low temperatures. These results suggested that feedback effects of surface temperature on core temperature also exist in poultry, as already observed in mammals, and could be induced not only by changed ambient temperature but also by the changes in humidity at high temperature. The disturbance of thermal equilibrium could not be established solely by changes in RT, but rather core and surface temperatures had to be considered. The daily rhythms in rectal and surface temperatures were affected by humidity.

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