Epizootological and serological monitoring of mixed respiratory and intestinal infections in cattle

Respiratory or intestinal disease of young cattle is an extensive group polietiologichesky infections, the role and importance of which are particularly large in terms of their concentration in limited areas and a wide development for the purchase of cattle to improve the breeding work and the creation of highly productive herds. The practical significance of the article is that it shows the data of clinical and epidemiological studies seromonitoring 5600 serum samples in disadvantaged farms for respiratory and intestinal infections of calves. The authors established polyetiology and mixed course of the above diseases of young cattle.