引起奶牛繁殖障碍的因素很多,有先天性的,也有后天性的,而感染外源性疾病是后天性繁殖障碍中最常见的因素。除了常见的产科疾病以外,引起奶牛繁殖障碍的疾病还包括牛布鲁菌病、牛沙门氏菌病、牛传染性鼻气管炎、牛胎毛滴虫病、牛新孢子虫病、牛病毒性腹泻（牛黏膜病）等。在奶牛生产中,要根据实际发病情况,查明发生原因,采取相应措施,科学处置和防控。

There are many factors causing reproductive disorders of dairy cows,including congenital and acquired ones,and infection with exogenous diseases is the most common factor in acquired reproductive disorders. In addition to common obstetric diseases,the diseases causing reproductive disorders of cows also include brucellosis,salmoniasis,infectious rhinotracheitis,trichomoniasis,neosporidiosis and viral diarrhea（bovine mucosal disease）. In the production of dairy cows,it is necessary to find out the causes according to the actual disease situation,take corresponding measures,deal with and prevent scientifically.