Cattle FAQs

- Frequently Asked Questions -

I have heard that twin calves of the opposite sex are automatically sterile. Is this true?

Answer posted by W Wagner

No, the calves are not automatically sterile. First of all there is nothing wrong with the bull calf, the problem is in the heifers. When a heifer and a bull are in the womb together the bull's testosterone overpowers and greatly affects the development of the heifer, possibly causing infertility known as free martin. However there is a slim chance the heifer may be fertile and be able to breed and raise a calf.

Answer posted by Hanson

You can have a blood test done to determine if a female is sterile (a freemartin).