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What is the breeding age of a bull?

Updated: 9/13/2023
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13y ago

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A bull will often reach puberty by the time he's around 12 months of age (some a little sooner, if the herd's a good fertile herd), and by this time, as a Yearling Bull, he is ready to be used on heifers or sold to another producer's farm or ranch to be used on the heifers and cows there.

Some bull calves can show libido when they reach 6 to 8 months of age. Some won't show it until a month or so later. Most bulls should be showing libido by the time they are 12 months old.

However, all this depends on the breed and each individual bull. Some breeds that are later maturing (typically Continentals), like Charolais, Simmental, Limousin or Salers, won't start showing puberty until they're around 12 to 16 months of age. Other breeds that are more early maturing (typically British-type breeds) like Angus, Hereford, Shorthorn, Jersey, or Red Poll will start showing puberty as early as 6 to 9 months of age. A lot of producers who raise British bred bulls will start using them on heifers or cows when they reach ~12 months of age.

But the best thing to do is to start using the bulls when they start showing signs of sexual maturity: when they show interest in cows or other heifers that are in heat, attempt to mount and ejaculate, etc.

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Q: What is the breeding age of a bull?
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