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Information × Registration Number 0221U103425, 0116U002301 , R & D reports Title To establish the mechanisms of bio- and abiotic factors influence to the biological characteristics of germ cells and embryos for highly productive animals reproductive function improving popup.stage_title Head Buhrov Oleksii D, Registration Date 20-02-2021 Organization Institute of Animal Husbandry of the National Academy of Agrarian Sciences of Ukraine popup.description2 The efficiency of poly ovulation induction was determined when used in donor cows, „Foligon ”in combination with cysteine. The high efficiency of the modified method for determining latent endometritis has been proved. It was determined that the critical areas of damage during cryopreservation of mouse embryos in 10 % glycerol solution at a slow rate are in the range from - 20 to – 50 ºС. It was determined that the use of multiprotectors in cryopreservation of rabbit embryos ensures their preservation at the level of 91,6 % (n = 11). The advantage of triple artificial insemination of sows was estimated: fertility increased by 13,3-18,7 %, and fertility by 10,6-29,6 % compared with double insemination. It was found that when inseminating pigs with twice the sperm volume of 100 cm³ with a temperature (17 °C and 35 °C), the fertility of animals compared to the experimental groups with triple insemination with a sperm volume of 70 cm³ was lower by 14,2 % and 16,6 % respectively. It was proved that the use of triple insemination with a sperm volume of 70 cm³ increased the fertility rates in repair pigs by 2,9 % and 5,2 %, respectively, compared with double insemination, both with the introduction of sperm at 17 °C and 35 °C. It was revealed by the results of studies carried out with sexually frozen-thawed bull sperm that, regardless of the degree of separation, the sperm had motility not less than the physiological norm in 40,0 % of sperm with rectilinear-gradual (progressive) movement; in this case, sperm with a lower level of separation of germ cells on the X chromosome (75 %) was more active by 12,5 %, compared with sperm with a separation level of 90 %. It was proved that in terms of survival at 38 °C, sexed bull semen was significantly lower than the physiologically accepted norm for non-sexed sperm, namely, less than 2,5 hours. for sperm with a separation level of 90 % and 1,5 hours. for semen with a separatio  Product Description popup.authors popup.nrat_date 2021-02-20 Close