If your cow has retained a small piece of placenta, it's crucial to contact a veterinarian immediately. Here's why:
* Infection: Retained placenta can lead to serious infections (metritis) in the cow, which can be life-threatening.
* Complications: It can cause complications with future pregnancies.
A vet can examine your cow, determine the severity of the issue, and recommend appropriate treatment. They may prescribe antibiotics or other medications, and they may need to perform a manual removal of the placenta.
Please don't delay in seeking professional veterinary help.