The monograph analyzes the problem of postnatal morphogenesis of tissue components, immune structures and lymphatic vessels of the stomach of piglets. It is established that the degree of differentiation and specialization of the main structures of the stomach wall in newborn piglets depends on their body weight (conformity of newborn piglets body weight to the breed standard). The results of analysis of the age-related changes of the main components of the porcine stomach wall in early postnatal ontogenesis are presented. The features of growth and development of immune structures of piglets gastric mucosa, lymphatic vessels and gastric lymph nodes during postnatal adaptation are interpretated.For scientists, lecturers and post-graduate students in the field of veterinary medicine, biotechnology and biology.

The results of allergic, bacteriological and biochemical studies in the diagnosis of mycobacterial infections of mammals and birds in the zoo of the municipal enterprise «T. H. Shevchenko park of Culture and Rest» Dnipro city are described. Comprehensive epizootic research was aimed at the exclusion of dangerous pathogenic mycobacteria. Zoological zones of pathogenic mycobacteria were not recorded in the environment and in animal organisms, but in the ground of enclosures and faeces we identified three cultures of acid-fast microorganisms, one of them was identified as M. flavescens, indicating the circulations of mycobacterial agents in internal and external environment of animal biotope of zoo.