Winter dysentery is o infectious disease with a great catching in winter season. The
disease appear frequently in winter ay dairy and it characterize through diarrhoea,
sometimes hemorrhagic, noteworthy decrease of milk production and disturbance in general
status. This study was effect into o cow out of farm, which a lot of primiparous cow got sick
immediately after calving. The study was making on 50 cows which calved/aborted in
January and February 2008. It was make epizootical, clinical and morfopatological
examinations. The data suggest that after calving, in special at the primiparous cow, it was
develop the winter dysentery.