Some Biotechnological Factors Influence at Sheep-recipients Litter Engraftment and Production after Transplantation of Embryo Material Injected by Gene Construction

As a result of researches it was stated that there were no particular differences between sheep biomaterial engraftment injected in spontaneous and induced estrus. There is also a tendency of pregnancies growth during transplantation of zygotes to animals that were during the period of natural fertilization. Synchronic estrus appearance during 0-8 and 12-24 h influenced engraftment rates after cells transplantation, that were injected to alien DNA. Two yellow cells let us raise zygotes engraftment at 22,9 and 9,6% compared to one and more than three ovulations. Transgenesis was determined by one dead-born goat, that was 14,3% of the whole amount born.

hormones, yellow cell, embryo, zygote, sheep, cultivation, environment, injection, anesthesia, fertilization, engraftment, synchronization-stimulation, super ovulation, transgenesis, estrus, ovary

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