FIELD: veterinary medicine. SUBSTANCE: method deals with pathoanatomical and differential diagnostics of infectious diseases in neonatal youngsters of agricultural animals. After autopsy of neonatal calves, piglets, after complete removal of organocomplex, thorough study of serous coverings of digestive organs one should take into account the specificity of hemorrhagic diathesis development, particularly, inflammatory hyperemia of right gastroomental artery of abomazum's serosa in neonal calves and stomach in neonatal piglets. The method of diagnostics is considered to be very specific and valuable at putting pathoanatomical diagnosis in previously favorable farms that enables to reveal the ways to distribute infection sources in unfavorable hospitals, control efficiency of conducted curative-prophylactic measures, establish correct pathoanatomical diagnosis in animals after antibioticotherapy and at associative manifestation of disease. EFFECT: higher efficiency of diagnostics. 2 dwg, 2 ex
