Abo-Elezz Z R
Beitr Trop Landwirtsch Veterinarmed. 1982;20(1):69-74.
36 doses of the Balady breed- in three groups-were exposed to solar radiation for different periods of time during 10 successive days, beginning with the 5th day of pregnancy. Six hours of exposure to direct solar radiation led to a mortality rate of 37.5%. With increasing exposure to heat, the average number of litters and the average litter wight decreased. The results can contribute towards explaining the low reproductive efficiency of livestock exposed to a high degree of direct solar radiation.
36头巴拉迪品种的母羊分三组，从怀孕第5天开始，连续10天暴露于太阳辐射不同时长。暴露于直射阳光6小时导致死亡率达37.5%。随着受热增加，平均产仔数和平均窝重下降。这些结果有助于解释暴露于高度直射阳光的家畜繁殖效率低下的原因。
