The authors of the article consider an avian disease -the respiratory mycoplasmosis of birds, its etiology, pathogenesis, description of clinical and pathoanatomical and pathohistological features of the course of the disease. In our country, despite the fact that there is a developed system against respiratory mycoplasmosis of birds, based on protection of farms from the introduction of infection from the outside, compliance with veterinary and sanitary rules, zoohygienic and technological standards, as well as measures aimed at timely detection of the disease, the problem of the spread of this disease is quite acute. Currently, the topic of respiratory mycoplasmosis does not lose its relevance precisely because of the high percentage of infection in poultry farms. For example, as a result of research conducted by the ARRIAH over the past 5 years, it was revealed that 218 out of 250 poultry farms in Russia were diagnosed with respiratory mycoplasmosis.

The problem of the spread of coccidiosis (eimeriosis) in animals is still an urgent problem for veterinary specialists around the world. In this regard, the aim of the study was to study the most complete pathomorphological picture of this disease in goats. The research material was the fallen kids of the Alpine breed. The research was carried out on the basis of one of the goat breeding farms in the Sverdlovsk region. Diagnostics was performed according to clinical, laboratory and pathomorphological studies. Research results. The article describes the morphological picture of pathological changes in the parenchymal and target organs. The scientific novelty lies in the fact that a morphological assessment of changes in target organs, parenchymal organs that provide detoxification function in the body, in the organs of the immune system and in parenchymal organs that perform vital functions in the body of blood circulation and gas exchange has been carried out.