【摘要】 近年来奶牛胚胎早期死亡现象有所增加。针对这个问题,我们和生产实践相结合。对奶牛胚胎早期死亡原因及治疗方法做了初步探讨。根据饲料分析和试治观察。初步认为曰粮中长期缺乏胡罗卜素是造成奶牛早期胚胎死亡的主要原因之一。并用 V_A,V_E、黄体酮试治37头胚胎早期死亡的奶牛,治愈30头,有效率81%。更多还原

【Abstract】 In recent years,the rate of early embryo death of cows is continually increasing.In this paper,the cause and the curing methods are discussed. According to the analysis of feeds and the clinical observation,it is considered that the deficiency of carotene in the diet is one of the main causes.Thirty seven cows,whose embryos died in the early development, were treated with vitamin A and E and progesterone,and 20 of them were cured.更多还原