Unraveling Infertility: Deciphering the Molecular Basis of Idiopathic Infertility in a Thoroughbred Stallion

In this study we report on the investigation of complete infertility in a 5-year-old Thoroughbred stallion. The stallion was considered infertile after performing 72 covers and achieving 0 pregnancies over one breeding season. Although initial semen assessment (sperm concentration, motility, longevity and morphology) revealed below average parameters, these were not sufficient to explain complete infertility under a managed system. The stallion displayed normal libido, breeding behavior and ejaculation, and semen contained viable, progressively motile spermatozoa (number of total progressively motile sperm per ejaculate ranging from 7.8x108 to 2.8x109).
Source: Journal of Equine Veterinary Science - Category: Veterinary Research Authors: Source Type: research