This review summarises the most significant findings related to the issue of the quantitative and qualitative indicators of stallion ejaculates, its processing when producing chilled insemination doses and the possibility of influencing the individual steps of the entire process. Artificial insemination, with cooled-storage semen, is increasingly used in horse breeding because it offers many advantages over natural breeding. The parameters of sperm quality and, above all, the standardization of conditions in the production of cool-stored insemination doses are still not clearly specified. There is considerable scope for further development and research in this area.
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