Influence of sire genotype and cattle breed gene pool on sperm cryosurvival
Submitted by Гость (not verified) on Sun, 07/13/2025 - 22:08This study characterized sires of Red-and-White, Black-and-White, and Red Steppe cattle breeds at JSC Barnaul Bull Stud Enterprise (Altai Krai, Russia) in terms of sperm production quality and resistance to freezing. A total of 50,388 ejaculates were examined before cryopreservation, including 38,333 that were frozen. The influence of individual sires was assessed on 1,716 ejaculates. Sires of the Black-and-White breed had the highest rate (31%) of sperm culling before cryopreservation. This rate was 9–18.2 percentage points higher than sires of the other two breeds (p < 0.001).