1. INTRODUCTION Brucellosis is an acute and chronic infectious disease of many animal species and humans.The variety of forms and brucellosis course still amaze researchers studying the problems of this disease. Changing conditions for keeping animals in the intensification direction and concentrated keeping, feeding animals with feed treated with various chemical and bacterial preparations, changes in the ecological atmosphere conditions lead to a change in the resistance and many other properties of pathogenic microorganisms - causative agents of infectious animal diseases, and, accordingly, the clinical manifestation of the disease and its consequences can also change. Therefore, we set the of pathoanatomicalsigns study in the subclinical course of brucellosis in cattle in a herd with a different course and immune background of this disease as the aim of our research.