The answer to your question is somewhat mare dependent. Some mares will have a significantly greater inflammatory response to frozen semen than cooled, while with most there is little or no difference. If you are aware of the risk then you can monitor for it and be prepared to treat with a lavage, so the end result is most likely to be a need for a little more management, but if the frozen semen may produce a better quality foal then the risk is probably worth it.
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