上个世纪初,澳大利亚一个农场主发现,自己农场的母牛难产死了,母牛生的小牛吃不到妈妈的乳汁,往往挣扎几天以后就会死去。后来,类似的事件又发生过几起,引起了主人的注意和警觉。以后再有难产而死的母牛,他就尽量让同时产仔儿的其他母牛喂养遗下的小牛,居然都活了!他觉得这里面一定有什么因素在起作用,但是始终也没搞明白。 At the beginning of the last century, a farmer in Australia discovered that her cow had died of dystocia on her own farm. Her cows born with cows could not eat her mother’s milk and would often die after struggling in a few days. Later, similar incidents occurred several times, causing the owner’s attention and vigilance. Later, after a dystocia death, he tried to let the other cows born at the same time feed the remaining calves, but all survived. He thought that there must have been some factors at work, but never Get it.