Abstract
Aim:The present study aimed to investigate the seroepidemiology of infectious bovine rhinotracheitis (IBR) infection in the non-vaccinated cattle population in northern part of Tamil Nadu, India.Materials and Methods:A total of 255 sera samples were collected from cattle having the history of respiratory and reproductive disorder from cattle of different age, breeds, and sex. All the sera samples were subjected to indirect ELISA for the diagnosis of IBR antibodies.Results:Results revealed that the seroprevalence of IBR infection among non-vaccinated cattle population was of 65.88%. No significant difference was noticed in the prevalence of IBR infection between cattle showing respiratory (63.64%) and reproductive form (70.89%) (p≥0.05). A higher prevalence was noticed in animals above 3 years of age (59.60%) and in crossbred animals (71.26%) than young and non-descript animals. This study showed the higher prevalence of IBR infection in female (67.92%) than in male (33.33%).Conclusion:Cattle population in this part can better be protected with vaccination than leaving them unvaccinated and sero-monitoring shall have to be stressed with regular attempts to isolate and characterize the causative agent for IBR.
Highlights
Infectious bovine rhinotracheitis (IBR) caused by bovine herpesvirus Type 1 (BHV1) is a common cattle disease which is responsible for the significant huge economic loss in dairy industry worldwide
Results revealed that the seroprevalence of infectious bovine rhinotracheitis (IBR) infection among non-vaccinated cattle population was of 65.88%
No significant difference was noticed in the prevalence of IBR infection between cattle showing respiratory (63.64%) and reproductive form (70.89%) (p≥0.05)
Summary
Infectious bovine rhinotracheitis (IBR) caused by bovine herpesvirus Type 1 (BHV1) is a common cattle disease which is responsible for the significant huge economic loss in dairy industry worldwide. Infection with BHV-1 is associated with mild to severe respiratory disease and represents a high-risk for bovine respiratory disease complex. Infections with this agent can manifest as ocular, neonatal, gastrointestinal, and neurologic disease as well as reproductive failure due to abortion and other genital symptoms (infectious pustularvulvovaginitis (IPV) and infectious pustularbalanoposthitis (IPB) [1,2]. Though the disease is essentially a herd problem, occurs mostly in animals over 6 months of age. Transmission occurs normally by contact with infected animals, aerosol route and virus-contaminated semen from BHV-1 infected bulls. A complication associated with IBR infection is the ability of the virus to establish latency unless stress conditions favor its reactivation [3]
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