I’ve been seeing an uptick in stallion fertility challenges, particularly with older horses. Recently, I incorporated a novel semen evaluation technique that has improved my success rates significantly in fresh collections, and I’m curious if anyone else has found effective methods or tools to address similar issues in their practice.
But i totally feel your pain with older stallions, . I’ve had success using a thermal imaging camera to assess blood flow there before collections — it’s made a difference for me. Sometimes I wonder if the added costs are worth it for every stallion, though.
I’ve also had luck with using cryopreservation techniques for older stallions — it’s been worth the extra effort! Have you tried any specific protocols? 
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I’m intrigued by your semen evaluation technique! I’ve had good results using hormone assays before collections, which sometimes helps target the timing better. Have you noticed improvements in that area?