NEWS
Ask the Vet
Mon Feb 23, 2015 03:15 PM CST
Cows with a viable pregnancy will still sometimes go into heat. Preg check her to be sure of the status. (DTN/Progressive Farmer photo by Victoria G. Myers)

Question:

I bought a cow that was artificially inseminated and diagnosed as safe in calf. She was in standing heat about a month before her due date. I called the breeder, and he said she may have aborted. I was not very happy, but then she calved a few days before her due date. Now I have to eat crow. How could this happen?

Answer:

Pregnancy does not stop a cow from cycling. It is not common, but I have seen this on several occasions, including on my farm. If a cow has been diagnosed as pregnant and shows heat, never assume she is open until she has been rechecked. You could end up selling a pregnant cow. I have also seen problems when owners put these cows on estrus-synchronization programs. If a cow has not just recently calved, have her preg-checked before starting to sync.

(VM/CZ)

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