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    Morphometric study of the uterus of lowland European Bison Bison Bonasus (Linnaeus, 1758)
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2016) Olbrych, Katarzyna; Czerniawska-Piątkowska, Ewa; Bartyzel, Bartłomiej J.; Max, Andrzej; Szara, Tomasz; Departament of Mofphological Science, Warsaw University of Life Sciences – SGGW, Warszawa; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin; Departament of Mofphological Science, Warsaw University of Life Sciences – SGGW, Warszawa; Departament of Small Animal Diseases whit Clinic, Warsaw University of Life Sciences – SGGW, Warszawa; Departament of Mofphological Science, Warsaw University of Life Sciences – SGGW, Warszawa
    Despite successful restitution in Poland, European bison still belongs to endangered species. The aim of study was to describe the morphology of the uterus of European bison and to perform morphometric analysis of the organ as well as to compare findings with available data on domestic cattle. The material consisted of female genital organs obtained from 55 females living in the Białowieża Forest. The animals were divided into two age groups. Group I consisted of 36 sexually immature females, while group II comprised 19 sexually mature animals. Significant differences were observed between the two age groups. In young female uteri, except cranial parts of horns, lay in the pelvic cavity. In older animals, most of which have already given birth, uteri were bigger, therefore only a distal half of the cervix was located in the pelvis, while the rest of the organ stretched to the abdominal cavity. Generally, the uterus of the European bison is similar to that organ in domestic cows, however some differences were specified, may be related to a different lifestyle.