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Online Journal of Veterinary Research©
(Including Medical and Laboratory Research)
Volume 27 (4): 199-203, 2023.
Seroepidemiology of herpes and parainfluenza viruses in Holstein cows.
Farzinpour M1, Pourjafar M1*, Badiei K1, Ghane M1 and K Zare2
1Department of Clinical Sciences, School of Veterinary Medicine, Shiraz University, 2Department of Statistics, Science and Research Branch, Islamic Azad University, Fars, Iran.
Farzinpour M, Pourjafar M, Badiei K, Ghane M, Zare K., Seroepidemiology of herpes and parainfluenza viruses in Holstein cows, Onl J Vet Res., 27 (4): 199-203, 2023. Authors report sero-epidemiology of bovine herpesvirus-1 and parainfluenza virus-3 in 730 three month to 7 year old unvaccinated dairy Holstein cows from 22 industrial and semi-industrial farms. For associated risk factors we recorded age, respiratory diseases, milk production, husbandry and herd size analyzed by Chi-square and logistic regression test. We found 140 with herpes and 672 influenza viruses by ELISA yielding prevalence of 19% (95% CI: 16-22) and 91.3% (95% CI: 89-93%). Herpes antibodies were associated with all respective factors, except age and milk production whereas influenza antibodies were with all risk factors (P < 0.05). However, increased age and milk output was associated with influenza viruses (P<0.05). Animals with less respiratory disease had less antibodies to both viruses and as expected more in larger herds.
Key words: Bovine herpesvirus-1; parainfluenza virus-3; Indirect ELISA; Risk factors; Seroprevalence.