My 5 year old canadian sporthorse has only one testicle. When is the other one going to drop and how much does this affect him? I want to use him for breeding so anyhting thing would be helpful.
Some stallion's testicles do not descend until as late as their sixth year. They are however rare. Reviewing the article on this web site about cryptorchidism will offer assistance.
As an aside, it also means (if the testicle does not descend before inspection) that the stallion will not receive breeding approved from the CSHA, as - like most sport horse registries - the CSHA will not approve cryptorchids, as it is possibly a hereditary problem (unproven one way or the other, but not something a registry should, or should want to risk).
Often times, a cryptorchid can be fertile for breeding purposes. It would be a personal choice to breed him or not, considering that the research is not conclusive to a hereditary problem. Research has not confirmed a higher incident of cyprochidism from a cryptorchid.
There may be a higher stallion-like behavior with a cryptorchid due to the retained testicle. There may even be pain involved, depending on where the retained testicle is located. With all considered, it may be best to have a cyptorchid gelded.
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