EMBRYO PRODUCTIVITY OF THE DONOR COWS INSEMINATED BY UNISEXUAL AND BISEXUAL SEMEN
Ateikhan B. Micinski J. Kazhgaliyev N.Z.H. Bekseitov T.K. Kobzhassarov T. Orzechowski B.
2022University of Warmia and Mazury
Polish Journal of Natural Sciences
2022#37Issue 123 - 37 pp.
The aim of the study was to determine the quantity and quality of embryos and effectivity of embryo transfer obtained from Simmental donor cows by artificial insemination with various semen types. The study indicated that cows fertilized with bisexual sperm had a higher fertilization efficiency than those fertilized with unisexual sperm. From one cow fertilized by bisexual sperm, an average of 10.0±2.25 transplantable and 2.8±1.65 was non-transplantable embryos were obtained. When used the unisexual semen, 6.2±4.30 and 4.0±2.02 embryos respectively were obtained. Thus, using bisexual semen resulted in an average of 2.6 more embryos. The superovulation of two donors fertilized by unisexual sperm was unsuccessful. The above suggests that conditions close to natural ones created greater survival possibilities for a higher number of transplanted embryos which means more successful reproduction.
blastocyst , cattle , donor , embryo , transplantation
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Seifullin Kazakh Agro Technical University, Pobedy, Nur-Sultan, Kazakhstan
Department of Sheep and Goat Breeding, Faculty of Animal Bioengineering, University of Warmia and Mazury in Olsztyn, Olsztyn, Poland
Toraighyrov University, Lomova, Pavlodar, Kazakhstan
Kostanay Regional University, Kostanay, Kazakhstan
Seifullin Kazakh Agro Technical University
Department of Sheep and Goat Breeding
Toraighyrov University
Kostanay Regional University
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