Seroprevalence of Infectious Bovine Rhinotracheitis in Dairy Animals with Reproductive Disorders in Uttar Pradesh, India

Abstract

Respiratory and reproductive disorders in dairy animals due to various etiological agents have led to significant economic losses to dairy industry. These losses are due to abortions, metritis, retention of placenta, repeat breeding, death of animals, loss of production and trade restrictions etc. The objectives of this cross-sectional study were to detect the seroprevalence of infectious bovine rhinotracheitis (IBR, BHV-1) in dairy animals of western parts of Uttar Pradesh, India. Anti BHV-1 antibodies were measured using a commercial ELISA kit (SYANOVIR® IBR-Ab). Blood samples were collected from a total of 134 animals of different age, gender from 8 districts. Overall individual seroprevalence was 32.84%. The study revealed that BHV-1 is comparatively more widespread in cattle (46.51%) than buffalo (35.28%). Comparison of different sex groups of animals revealed that the higher numbers of infected animals were identified in male (48.00%) than female (29.35%). The seropositivity of IBR increased with age of animals. The highest prevalence of IBR (66.67%) was observed in animals aged more than 8 years. As vaccination against IBR is not practiced in the region and higher percent positivity (>20%) in all age group of animals indicated the natural circulation of BHV-1 virus in the population. Because of less awareness on the vaccination of animals against this virus, the disease may spread rapidly. The results of present study also indicate that strict monitoring and surveillance of IBR is need of today to protect the animals from infection and further spread.

Seroprevalence of infectious bovine rhinotracheitis in organized dairy farms of India

“…Maximum seropositivity of IBR was found in animals between 3-4 years of age (Table 3) which was in agreement with Verma et al (2014) who reported that animals more than 2 years of age are more prone to IBR virus infection than younger animals. The possible reason might be production stress in this age group might lead to activation of latent infection and there were more chances of such animals get exposed to a natural infection.…”

Seroprevalence of bovine herpesvirus-1 antibodies in bovines in five districts of Uttarakhand

“…[31] in Uttar Pradesh and Verma et al . [7] in Uttar Pradesh have also reported greater prevalence rate in cattle population than buffaloes.…”

“…Contrary to our observation, Verma et al . [7] had observed more males to be seropositive than females in a study in Uttar Pradesh.…”

“…Various workers have published reports regarding the prevalence of this disease from different parts of India [4-7]. …”

Serological and molecular detection of Bovine Herpes Virus 1 infection in cattle by enzyme linked immunosorbent assay and polymerase chain reaction

“…Cho and Bohac (1985) also pointed out the increased specificity and sensitivity of ELISA for detecting BoHV1 antibodies over other serological detection methods. The commercially available ELISA kits for the detection of antibodies against BoHV1 were used by many researchers (Ravishankar et al, 2012;Verma et al, 2014) and were found to be effective, rapid, and reliable in nature in comparison with the conventional assays which were time consuming and expensive.…”