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奶牛胎衣不下是指奶牛在分娩后,胎衣在第三产程没有被顺利排出。奶牛通常在分娩后12 h内排出胎衣,但由于子宫收缩无力,胎盘水肿,炎症或其它遗传因素等会导致母牛产后胎衣滞留。该病的发病率高达40%~50%,甚至更高,胎衣不下不仅能够严重影响奶牛产奶率,还极易造成产后并发症,例如慢性子宫炎,阴道炎等,严重的还会导致母牛习惯性流产和不发情的现象,致使多数病牛被淘汰,严重影响养牛业的经济效益。
Dairy cows no less than refers to the cows in childbirth, the childbirth in the third stage of labor has not been successfully discharged. Dairy cows are usually discharged within 12 h after childbirth, but due to uterine contractions weakness, placental edema, inflammation or other genetic factors will lead to the retention of cows after childbirth. The incidence of the disease as high as 40% to 50%, or even higher, not less than not only can affect the quality of the cows milk yield, but also easily lead to postpartum complications, such as chronic uterine inflammation, vaginitis, serious will lead to mother Cattle habitual abortion and estrus phenomenon, resulting in the majority of cattle were eliminated, seriously affecting the economic benefits of raising cattle.