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Infertile cows may be called "open" or "barren" cows, and are usually those that cannot breed for a variety of reasons including cystic ovaries, poor conformation (too thin or too fat), injury from difficult birthing, or even malnutrition from a deficiency in various nutrients like copper, selenium, protein, and others.

Heifer calves that are often born with a male twin are called freemartins. They have a 90% chance of being infertile, and a likely chance of being hermaphroditic, or physically display both male and female characteristics and even sex organs.

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10y ago

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