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Content available Cykl estralny u świni domowej
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Pigs belong to poliestral animals because their reproductive cycle is repeated several times per year. The characteristics of the menstruation involves repeated cycles of the integrated cellular reproductive axis. The morphological changes of the reproductive organs such as uterus, fallopian tubes and vagina accompany the progress of the menstrual cycle. The understanding of the estral cycle mechanism and the monitoring of the estrus phase in female individuals affect the efficiency of pig farming because they can help to resolve the problems in sow reproduction that cause financial loss in pig production.
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Content available Folikulogeneza i steroidogeneza jajnikowa u świń
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Folliculogenesis is the process in which the basic structure of ovaries is created; it is required for the oocyte environment composition. Folliculogenesis begins in fetal life and leads to the creation of suitable environment for the oocyte metabolism in the ovary. This extremely dynamic and complex process coincides with meiosis of the oogonia. The complexity of the formation, growth and maturation of ovarian follicles is well explained not only by folliculogenesis but also by steroidogenesis which plays an important role in the creation of ovarian follicles.
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