Here's what you should do:
1. Contact a veterinarian immediately. They are the only ones who can properly assess the situation and provide the best course of action for the cow.
2. Observe the cow closely. Note any signs of discomfort, swelling, redness, or discharge from the udder.
3. Provide supportive care. Keep the cow comfortable and ensure she has access to fresh water and appropriate feed.
Possible reasons for a large udder after losing a calf:
* Milk stasis: When milk production continues without being drained, the udder can become engorged.
* Mastitis: This is an infection of the udder that can cause inflammation, pain, and milk production issues.
* Other underlying health conditions: There might be other factors at play, such as hormonal imbalances or complications related to the calf loss.
A veterinarian will be able to:
* Diagnose the issue: They can examine the udder, run tests, and identify the root cause.
* Prescribe treatment: This might include antibiotics, anti-inflammatory medications, or other treatments to address the specific problem.
* Provide advice on managing the udder: They can recommend techniques like milking or massage to relieve pressure and prevent complications.
Please do not attempt to treat the cow yourself. Improper treatment can worsen the condition and harm the cow.
Remember, seeking professional veterinary care is crucial for the cow's health and well-being.