734 — Semen Viability & “Semen Math”: Maximize Success with Fresh, Chilled & Frozen
About this episode
Dr. Marty Greer joins Laura Reeves to discuss semen viability and strategies for maximizing success with fresh, chilled, and frozen semen.
Semen Viability & “Semen Math”: Maximize Success with Fresh, Chilled & Frozen Dr. Marty Greer returns to break down semen viability, the six parameters of semen analysis, practical “semen math,” and strategies for maximizing success with fresh-chilled and frozen semen. Marty joins Laura to demystify semen viability and the practical realities of breeding with fresh, chilled and frozen semen. Whether you’re a first-time breeder or seasoned pro, this conversation delivers veterinary-backed guidance on how to assess semen quality, plan collections and protect valuable genetic material. Key topics covered: Semen Math: Dr. Greer walks through the core formula: ejaculate volume × sperm concentration × percent motile × percent morphologically normal (× post-thaw survival for frozen samples) to determine total usable sperm and number of breeding units. Use this to decide when to freeze, how many straws/pellets equal a true breeding unit, and when to be conservative with limited inventory. Six parameters of semen analysis: ejaculate volume, gross appearance, sperm count, morphology, motility (directional swimming vs. circular or backward movement), and longevity. Why each matters…
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