Dickie M B, Sabo P, Schaller A
Clinic of Obstetrics, Gynaecology and Andrology, University of Veterinary Medicine, Vienna, Austria.
J Reprod Fertil. 1994 Sep;102(1):41-8. doi: 10.1530/jrf.0.1020041.
In a interdisciplinary scientific cooperation involving human and veterinarian obstetricians and meteorologists, an attempt was made to correlate the obstetrical data of cows and pigs with meteorologically defined weather events. During the observation period of 10 years the parturitions of cattle (n = 645) showed no significant statistical connection to the weather on day of delivery, the day before parturition or the day after. The only significant result in cattle was a shortening of the gestation period by 4.9 days in a group of cows that went into labour on, or after, the sixth day of a constant weather situation. Significant variations in the duration of gestation in swine (n = 786) were related to the weather on the day of delivery; central high-gradient anticyclonic spring, summer and autumn weather was linked to an extension of the pregnancy by nearly 1 day, while cyclonic central low-gradient weather during autumn was related to a shortening of pregnancy by approximately 1 day. The weather on the day before parturition was also correlated with the duration of gestation in swine. In this respect, low-gradient cyclonic autumn weather coincided with gestation periods that were reduced by 0.95 days, while central anticyclonic winter and spring weather coincided with extensions of gestation of 0.98 and 1.12 days, respectively. Compared with labour during low-gradient anticyclonic weather, the course of labour in pigs was significantly protracted by approximately 1.5 h during low-gradient cyclonic weather. Weather fronts on the day before, the day after or on the day of labour had no influence on the gestation and parturition data collected in either species.
在一项涉及人类和兽医产科医生以及气象学家的跨学科科学合作中，研究人员试图将奶牛和猪的产科数据与气象学定义的天气事件关联起来。在为期10年的观察期内，牛（n = 645）的分娩与分娩当天、分娩前一天或分娩后一天的天气均无显著统计学关联。牛的唯一显著结果是，在持续天气状况的第六天或之后开始分娩的一组奶牛中，妊娠期缩短了4.9天。猪（n = 786）妊娠期的显著变化与分娩当天的天气有关；春季、夏季和秋季的中央高梯度反气旋天气与妊娠期延长近1天有关，而秋季的气旋性中央低梯度天气与妊娠期缩短约1天有关。分娩前一天的天气也与猪的妊娠期有关。在这方面，低梯度气旋性秋季天气与妊娠期缩短0.95天相符，而中央反气旋性冬季和春季天气分别与妊娠期延长0.98天和1.12天相符。与低梯度反气旋天气期间的分娩相比，低梯度气旋天气期间猪的分娩过程明显延长约1.5小时。分娩前一天、后一天或当天的天气锋对这两个物种收集的妊娠期和分娩数据均无影响。
