CYTOMORPHOLOGICAL RESEARCH OTSYT-CUMULUS COMPLEXES RABBIT FROM WITH OVARIAN AT DIFFERENT STAGES OF THE ESTROUS CYCLE

The analysis of the research results revealed that the largest number (86.4%) of oocytes suitable for further development outside the body can be obtained with ovarian follicular phase of growth. It should be noted that statistically significant difference was observed between the groups OCC rabbit derived from ovaries at different phases of the estrous cycle by the number oocytes unsuitable for further cultivation. Thus, the phase of the ovarian follicular growth of gametes was obtained only 13.6% of ovarian and with signs of ovulation and the luteal phase, 35.4% and 31.4% respectively. When comparing the results of the analysis of cytogenetic preparations oocytes from ovaries removed rabbit at different stages of the estrous cycle, found that regardless of the phase of the estrous cycle Yachnik mostly larger number of oocytes were under dyploteny. The largest number of gametes with diffuse chromatin at the stage dyploteny (37.3%) received from the stage ovarian follicular growth. At the stage of fibrillar dyploteny increasing number of gametes was removed from ovarian luteal phase of the estrous cycle. In step dyploteny visible bivalent were more likely gametes obtained from stage ovarian follicular growth (18,1%, p <0,05). The highest percentage of oocytes degeneration chromatin was observed in the group removed from the ovaries to the rabbit lyutealniy phase (21.6%).