If your cow has placenta out before the blister at calving, it's a serious situation and you should immediately contact a veterinarian.
Here's why it's important to seek professional help:
* Premature placental detachment: This can indicate complications like a retained placenta, which can lead to infection and other health problems.
* Risk to the calf: The calf may be in distress if the placenta is detached before birth.
* Need for specialized treatment: A veterinarian can assess the situation, determine the underlying cause, and provide appropriate treatment.
Do not attempt to treat the cow yourself. It's crucial to get professional assistance for the best chance of a successful outcome.