Igono M O, Molokwu E C, Aliu Y O
Vet Res Commun. 1983 Jun;6(3):223-6. doi: 10.1007/BF02214916.
From measurements of rectal temperature (Tre) at 06:00h (06:00Tre) and at 14:00h (14:00Tre), meteorological stress was determined in six Yankasa ewes in terms of per cent rise of 14:00Tre over 06:00Tre reference values during the harmattan and hot-dry seasons. Absolute and mean Tre values were significantly higher (P less than 0.05) during the harmattan than the hot-dry season. In both seasons, mean 14:00Tre was significantly higher (P less than 0.01) than 06:00Tre. The mean diurnal difference between 14:00Tre and 06:00Tre, i.e. delta Tre was about 1 degrees C during the harmattan but ranged between 0.5 and 0.7 degrees C during the hot-dry season. All animals were observed to shiver during harmattan nights.
通过测量早上6点（06:00Tre）和下午2点（14:00Tre）的直肠温度（Tre），根据哈马丹季和炎热干燥季节14:00Tre相对于06:00Tre参考值的上升百分比，确定了6只扬卡萨母羊的气象应激情况。哈马丹季的绝对Tre值和平均Tre值显著高于（P<0.05）炎热干燥季节。在两个季节中，14:00Tre的平均值均显著高于（P<0.01）06:00Tre。14:00Tre与06:00Tre之间的平均昼夜温差，即ΔTre，在哈马丹季约为1摄氏度，而在炎热干燥季节则介于0.5至0.7摄氏度之间。观察到所有动物在哈马丹季夜间都会颤抖。
