I have a question-has anyone ever heard of a farm suing Regumate on a stallion to help him travel and show? I have a friend who cannot take her stallion anywhere due to him being ruined by a tariner in his past life. He is impossible to ride, and despite all efforts, he is not responding. She has had him on Regumate for 90 days now, and he is responding favorably. She plans to take him off Regumate 120 days before breeding season. Anyone ever heard of this?}}}}}
Regumate is used by some for showing. There is no research into the long-term effects on fertility of stallions that have received Regumate, but there is evidence to suggest a possible negative effect. The short-term effect on fertility if definitely negative.
I always teach - and am immovable on - that if a stallion is "bad" enough to handle that he needs to receive female hormone therapy that he should be castrated. If it is a trainer issue, find a trainer that is capable of handling a stallion without resorting to unnatural hormonal manipulation.
There is also a legal/ethical question to be considered - if a stallion receives Regumate (or any progestin therapy) and then shows successfully, resulting in people breeding to him because he is so successful, are they really breeding to a successful stallion with a good work ethic, or is he actually being misrepresented?
In your case, from what you say, I'd recommend castration. Many "OK" stallions make good geldings.
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