Abstract
The aim of this work was the systematization and analysis of scientific data on cryoresistence of sperm of various types of animals and factors affecting the cryorezistivity of sperm. Sperm cryoresistence is the stability of sperm to the effects of low temperatures. Cryoresistence is evaluated according to the morphological characteristics of sperm, their activity and mobility after thawing, the integrity of the acrosomes, the plasma membrane and the degree of damage to chromatin. Cryoconservational is an important component of artificial insemination of animals, and knowledge about the cryorezistence of spermatozoa is the theoretical basis for the successful cryoponement of sperm. Based on the listed studies, cryoresistence has species features and depends on: the age of animals, pedigree features, season of the year, concentration of testosterone and prolactin in the blood, temperature and humidity index, as well as from cryoconservative protocols.
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