Pathomorphological changes in the early postnatal period in a calf with abomasum rupture

The main cause of the disease and death of calves in the early postembryonic period of development is a feeding disorder. The aim of the work was to analyze macro-and micromorphological changes in the digestive system of a calf with a rennet rupture. To achieve this goal, standard macro-and microscopic research methods were used. Macroscopic examination revealed thickening, erosion of the mucous membrane of the esophageal gutter rollers, accumulation of contents in the scar, mesh and book, hyperemia of the mucous membranes; thinning and rupture of the rennet wall; pronounced hyperemia of the mucous membrane of the small intestine, thickening of the mucous membrane of the thick section; an increase in mesenteric lymph nodes and a change in their consistency. Microscopically, the thickness of the epithelium, submucosal and muscle layer is most developed in the abomasum and was, respectively, 0.68-0.72 mm, 0.23-0.32 mm and 0.98-1.05 mm. Villi were found in the folds of the scar, numerous well – developed longitudinally oriented protrusions were found in the book, lymphocellular clusters and bottom glands were found in the rennet; folds with well – developed crypts were found in the colon. Thus, as a result of feeding coarse feed, the deceased calf has catarrhal erosive lesions of the esophageal trough; serous-catarrhal abomasitis with signs of hemorrhagic with dilation and perforation in the cardiac part; hemorrhagic omasitis against the background of a book blockage; catarrhal reticulitis; catarrhal ruminitis and catarrhal enterocolitis