SHARP RESPIRATORY DISEASES OF CATTLE AND PROPHYLAXIS PROBLEM IN THE MODERN CONDITIONS OF INDUSTRIAL PRODUCTION
Diseases of lungs of an infectious etiology often accept character of epizooties and therefore represent a problem for animal husbandry, and are widespread in the agricultural enterprises of Sverdlovsk region. Annually with them 27,3% of calfs get sick, and 5.8 % of animals from number of the diseased perish. Found that lung disease infectious etiology, registered on the territory of Sverdlovsk region in the last 10 years have exogenetic character. Infectious rhinotracheitis, virus diarrhea disease mucous and chlamydia are listed in the agricultural enterprises of the Sverdlovsk region with imported livestock of cattle. When carrying out researches it is established that mass defeats of respiratory organs in calfs and the outbreak of diseases with a respiratory symptom-complex in many agricultural enterprises are caused by a virus of an infectious rhinotracheitis of cattle (BHV-1) and the causative agent of pasteurellosis. Results of researches on studying of an etiology of mass respiratory diseases of the calfs, the obtained data on a wide spread occurance of the above infections, the considerable economic losses which bear livestock farms from these diseases, induced us to improvement of measures of fight and system of specific prophylaxis. Introduction of the developed system of actions against diseases of lungs of an infectious etiology allowed to reduce substantially incidence, a case, sanitary marriage in breeding farms, and also to lower percent of selection of virus IRT of cattle. The advanced system of prophylaxis of respiratory diseases of cattle combines a complex of specific and technological actions - vaccinal prevention, technology of cultivation of calfs at moderately low temperatures, allowing to limit distribution of diseases of lungs of an infectious etiology and to reduce economic losses of the agricultural enterprises.