Abstract
This scientific article presents the data about pathological and morphological changes in five corpses of calves infected with Salmonellain vivo, as well as the efficacy of the "Emix" preparation used against salmonellosis in calves. Forty calves were used and divided into four groups; Grp1: Healty calf, general feeding program, "Emix" , Grp2: Healty calf, general feeding program (Control group), Grp3: Diseased calf without appetite, general feeding program, "Emix", Grp4: Diseased calf without appetite, general feeding program. At the end of the experiment, Grp1 showed better live weight compared to the other groups. The changes characteristic of salmonellosis that were detected in course of pathomorphological study are as follows: acute catarrhal-hemorrhagic enteritis, acute serous inflammation of mesenteric lymph nodes, acute congestive hyperemia and pulmonary edema, and granular degeneration of the liver and the heart. Keywords: Salmonellosis, "Emix" probiotical preparation, calf, pathomorphology, histology, edema, intestines, histological studies.