Analysis of the etiological structure of bovine respiratory disease

The article presents data on the analysis of the spread of bovine respiratory disease. It was found that the main age group of animals with bovine respiratory disease were calves aged from 5-7 days to 4 months. In 19% of cases pathogens of bovine respiratory diseases were diagnosed in calves: BPIV-3 in 9.8% of calves; BHV-1 - in 6.1%; BVDV - in 3.1%. Respiratory diseases in calves are caused by polyethological factors and proceeded according to the type of parasitocenosis in most cases was determined. In calves with combined lesions of the respiratory and gastrointestinal tract, 49.4% of the cases failed to identify the causative agents of intestinal infections, and in 50.6% - the following pathogens and their combinations were detected: BCoV in 21% of cases, BRV in 14, 8%, E. coli K 99 - 6.2%, E. coli K 99 + BRV - 4.9%, E. coli K 99 + BCoV - 2.5%, BRV + BCoV - 1, 2%. Eimeria bovis oocysts in 66.7% of the bioassay were found. Thus, in the event of respiratory and respiratory-intestinal diseases in calves, it is necessary to carry out a timely comprehensive diagnosis in order to identify the spectrum of agents of bovine respiratory diseases and intestinal infections. Determination of the combination of etiological agents involved in the pathogenesis of these diseases has a direct impact on the effectiveness of antiepizootic and therapeutic-prophylactic measures.

крупный рогатый скот, респираторные заболевания, этиологическая структура, ассоциированные инфекции, cattle, bovine respiratory disease, etiological structure, associated infections

1. Некоторые результаты изучения этиологии респираторных болезней телят в хозяйствах Московской области / А.В. Пчельников и др.// Российский ветеринарный журнал. Сельскохозяйственные животные. - №1. - 2015. - С. 16-18.

2. Применение инактивированной вакцины Хипрабовис-4 для профилактики ОРВИ в хозяйствах Свердловской области/ Е.Н. Шилова и др. // Ветеринария. - 2014. - № 11. - С. 15-17.

3. Противовирусный колостральный иммунитет и респираторные болезни у телят первого месяца жизни/Л.И. Ефанова и др.//Актуальные вопросы ветеринарной биологии. - №3 (19). - 2013. - С. 30-36.

4. Шилова Е.Н. Вирусная диарея - болезнь слизистых оболочек крупного рогатого скота в Уральском регионе / Шилова Е.Н., Ряпосова М.В., Шкуратова И.А., Вялых И.В. // Ветеринария. 2014. № 5. С. 19-21.

5. Шкуратова И.А. Ветеринарно-санитарные аспекты профилактики болезней молодняка крупного рогатого скота в современных промышленных комплексах/ И.А. Шкуратова, Е.Н. Шилова, О.В. Соколова// Российский журнал Проблемы ветеринарной санитарии, гигиены и экологии. - 2015.- № 3 (15). - С. 60-63.

6. Ackermann M.R. Innate Immunology of Bovine Respiratory Disease/ M.R. Ackermann, R. Derscheid, J.A. Roth// Vet Clin North Am Food Anim Pract. - 2010. - 26(2). - P. 215-228.

7. Shilova E.N. Clinical implications of bovine viral diarrhoea in breeding enterprises of the Ural region/ E.N. Shilova, I.V. Vyalykh// Science & Education. 2013. - Vol. 22. -№ 1. - P. 179-182.

8. Ryaposova M.V.Bovine viral diarrhea of cattles in the Ural region / Ryaposova M.V., Shilova E.N. // Reproduction in Domestic Animals. 2014. Т. 49. № 3. С. 92.

9. Single Pathogen Challenge with Agents of the Bovine Respiratory Disease Complex/ L.J. Gershwin et al.// PLoS One. - 2015. - 10(11): e0142479.

10. The epidemiology of bovine respiratory disease: What is the evidence for predisposing factors/J.D. Taylor et al.// Can Vet J. - 2010. - 51. - P. 1095-1102.