Legel S
Beitr Trop Landwirtsch Veterinarmed. 1979;17(4):381-9.
Previous analogous investigations of climatic factors influencing the performance of cattle in Syria were continued for Egypt between August 1975 and July 1977. Temperature and humidity data were recorded and related to standard physiological compatibility ranges for cattle and buffalos, respectively. The values found for the two test years largely agreed. 23.3% of the average temperatures of the two years were above the 0 to 24 degrees C temperature range, which is physiologically compatible. Only 28.8% of the total hours were within the optimum temperature range for cattle and buffalos. The values of the relative humidity in the first year were up to 38.5% within the optimum compatibility range, whereas 11.0% were within the too dry and 50.5% within the too moist range. The percentage increased when the animals were in direct sunshine, which reduced their performance.
1975年8月至1977年7月期间，之前在叙利亚开展的有关气候因素对牛的生产性能影响的类似调查在埃及继续进行。记录了温度和湿度数据，并分别与牛和水牛的标准生理适宜范围相关联。两个测试年份得到的值基本一致。两年的平均温度中有23.3%高于0至24摄氏度这一生理适宜温度范围。只有28.8%的总时长处于牛和水牛的最适温度范围内。第一年的相对湿度值在最适适宜范围内的高达38.5%，而在过于干燥范围内的为11.0%，在过于潮湿范围内的为50.5%。当动物处于直射阳光下时，该百分比会增加，这会降低它们的生产性能。
