Stories about being observed during a full moon the baby boom at first glance may seem only slightly less weird and fantastic than the tales about werewolves. However, recently a group of Japanese researchers from the Tokyo University managed to ensure that the relationship of the fluctuations in fertility and the lunar cycle is not a myth. The experts have helped cows.
Until the recent study day on how the full moon affects fertility in humans, has often led to very contradictory evidence, so until today the question of the relationship of this kind is considered open. According to scientists, this is due to the fact that in the case of men, the influence of the moon, even if it is largely “lost” on the background of many other important factors, including nutrition of mothers, the social environment and genetic characteristics etc. At the same time, when the calves from the cows, affects a much smaller number of different circumstances, so the experts decided to use cattle as a model could be very effective.
Researchers in the period from September 2011 to August 2013 watched in which days brought the offspring of cows Holstein breed at one of the Tokyo farms. All cows were quite close to each other from a genetic point of view, all of them equally cared for and fed with the same food, that is the difference between them was minimal.
During the observation the cows gave birth to calves 428 times, and scientists have noticed that shortly before the full moon and on the days when the full moon shone in the sky, the animals brought offspring more often than at other times.
While experts are not ready to say exactly how the birth rate can be tied to lunar cycles. Perhaps it has something to do with atmospheric pressure variations, however, for a more confident and specific answer will require more research. However, zoologists recognize that larger studies will be needed even to simply confirm their findings — the data collected is still insufficient to assert anything definitively.