Most of the afterbirth hangs outside the vulva. The appetite of the sick cow is normal, the temperature change is not obvious, and there is occasional fatigue. Upon initial inspection, you can feel that a small part of the afterbirth is tightly clasped on the maternal placenta plate or only a very small part of the nuchal tip of the gestational horn is adhered to the uterine maternal placenta. This situation can also be observed on veterinary B-ultrasound. The afterbirth hanging outside the vagina is light gray-red at first. Later, due to contamination,

It begins to decay after dyeing, turning into a soft and unclean light gray color, and soon spreads to the afterbirth in the uterus. At this time, foul-smelling brown secretions continue to flow out of the vagina.

When part of the placenta remains, most of it may fall off, with only a very small part remaining on the individual maternal placenta in the uterine horn. This can only be done after checking whether the shedding is complete or if there are gray-red afterbirth lumps in the lochia discharged after 3-4 days. It has been discovered, so the best way is to check it through veterinary B-ultrasound.

 In a small number of cows with retained fetal membranes, due to the decay of the fetal membranes, the lochia is not discharged smoothly and remains in the uterus, which facilitates the growth and reproduction of bacteria, and the toxins are absorbed, causing autopoisoning, causing systemic symptoms, elevated body temperature, lethargy, and significant loss of appetite. Or it may even turn into sepsis. After delivery, it is necessary to use veterinary B-ultrasound for regular examination.

When some cows have retained fetal membranes, the uterus may prolapse due to the strong exertion of the affected cow. When most of the placenta hangs outside the vulva, leaving only a small amount of maternal placenta attached to the end of the gestational horn, it often causes total uterine prolapse. During this process, veterinary B-ultrasound must be used for monitoring.

After delivery, if the cow's rope is too long, the cow's head can freely bend backwards, and the cow may eat the afterbirth. At this time, it is easy to be misdiagnosed as retained afterbirth, and a vaginal and uterine examination should be performed to confirm.