Winter-spring year season influence on the anomalous sperm cell form share in the native and cryopreserved sperm of the Holstein bull-sperm donors

On the basis of the research that has been conducted in PJSC “Krasnoyarskagroplem” in the winter-spring period, it is determined by the author that sperm production quality of the bull-sperm donors depends on various factors, including the species genotype and paratypical factors, for example, such as year season. The sperm production analysis of the Holstein breed bulls of different genetic lines on the anomalous spermium share (ASS) is conducted.