Seroepidemiological study of bovine respiratory viruses (BRSV, BoHV-1, PI-3V, BVDV, and BAV-3) in dairy cattle in central region of Iran (Esfahan province) |
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| Authors: | Edris Shirvani Mohsen Lotfi Morteza Kamalzadeh Vahid Noaman Masumeh Bahriari Hasan Morovati Alireza Hatami |
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| Institution: | (1) Quality Control of Viral Veterinary Vaccines Laboratory, Quality Control Management, Razi Vaccine and Serum Research Institute of Karaj, P.O. Box 311975-148, Karaj, Iran;(2) Veterinary Research Center of Esfahan, Esfahan, Iran |
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| Abstract: | Respiratory diseases in calves are responsible for major economic losses in both beef and dairy production. Several viruses,
such as bovine respiratory syncytial virus (BRSV), bovine herpes virus-1 (BoHV-1), bovine parainfluenza virus-3 (BPI-3V),
bovine viral diarrhea virus (BVDV), and bovine adenoviruses (BAV), are detected in most clinical cases with respiratory signs.
The aim of this study is to define seroprevalences of five major viral causes of bovine respiratory infections in cattle in
central region of Iran (Esfahan province). The population targeted was 642 dairy cows (Holstein–Friesian) from 25 farms. Samples
of blood serum from female cattle were examined. Sera were tested by commercial ELISA kits to detect antibody against BRSV,
BoHV-1, BPI-3V, BVDV, and BAV-3. The results were analyzed by Chi-square test. In the present study, seroprevalences of BRSV,
BoHV-1, PI3V, BVDV, and BAV-3 were 51.1%, 72%, 84.4%, 49.2%, and 55.6%, respectively. The present study shows that infections
of bovine respiratory viruses are very common in cattle in Esfahan. |
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