INDICATORS OF BULLS’ SEMEN MOTILITY AT DIFFERENT STAGES OF PREPARATION FOR IN VITRO FERTILIZATION
Abstract
Indicators of bulls’ semen motility were studied at all stages of preparation for in vitro fertilization. In the process of preparing semen for fertilization, when passing through all stages, there was a clear tendency for decrease in the average total motility of semen (by 14.2%), motility of sperm cells with rectilinear translational movement (by 19.0%), distance of the path curve (by 12.6%), distance of the average path (by 5.4%), distance of the straight path (by 3.2%), curvilinear speed (by 26.0%), the average speed of movement along the trajectory (by 11.7%); rectilinear movement speed (by 7.9%) and head oscillation frequency (by 5.7%). At the same time, indicators of linearity (by 9.8%), straightness (by 6.2%) and oscillations (by 10.2%) increased, and the values of the amplitude of the lateral head displacement did not change significantly.
Keywords
About the Authors
A. I. Gandzha
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
L. L. Letkevich
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
V. P. Simonenko
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
I. P. Sheiko
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
I. V. Kirillova
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
Е. D. Rakovich
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
О. P. Kurak
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
N. V. Zhurina
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
М. А. Kovalchuk
Research and Practical Center of the National Academy of Sciences of Belarus for Animal Breeding
Russian Federation
Russian Federation
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Review
For citations:
Gandzha A.I., Letkevich L.L., Simonenko V.P., Sheiko I.P., Kirillova I.V., Rakovich Е.D., Kurak О.P., Zhurina N.V., Kovalchuk М.А. INDICATORS OF BULLS’ SEMEN MOTILITY AT DIFFERENT STAGES OF PREPARATION FOR IN VITRO FERTILIZATION. Zootechnical Science of Belarus. 2021;56(1):21-28. (In Russ.)
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