Effect of Testosterone, Dihydrotestosterone, Estradiol, and Cortisol on the Quality of Fresh and Cryopreserved Stallion Sperm

June 2022 in “ Journal of Experimental Biology and Agricultural Sciences ”

Anna M. Shitikova, Mikhail Atroshchenko, Lidia V. Krokhotina, Mariya Engalycheva, M.N. Dmitriyeva

testosterone dihydrotestosterone estradiol cortisol sperm motility sperm cryopreservation sperm survival rates ejaculate volume total sperm count steroid hormone concentrations DHT sperm freezing

TLDR Higher testosterone harms sperm motility, while higher estradiol improves sperm survival.

This study on 40 stallions of various breeds examined the impact of testosterone, dihydrotestosterone, estradiol, and cortisol on the quality of fresh and cryopreserved sperm. It found that higher testosterone levels negatively correlated with both total and progressive sperm motility in both fresh and cryopreserved samples. Conversely, higher estradiol levels positively correlated with sperm survival rates in both conditions. Dihydrotestosterone levels were positively associated with ejaculate volume and total sperm count. Cortisol levels showed no significant correlation with sperm quality. The findings suggest that steroid hormone concentrations should be considered when selecting stallions for sperm cryopreservation.

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Effect of Testosterone, Dihydrotestosterone, Estradiol, and Cortisol on the Quality of Fresh and Cryopreserved Stallion Sperm

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research The Effect of 5α-Reductase Inhibition with Dutasteride and Finasteride on Semen Parameters and Serum Hormones in Healthy Men

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