Infectious reproductive diseases have great potential to create significant damaging effects to reproductive efficiency and therefore profitability for the beef herd. Pathogens causing reproductive diseases include: bovine viral diarrhea (BVD), infectious bovine rhinotracheitis (IBR), Leptospira, Tritrichomonas foetus, Campylobacter fetus subsp. venerealis (“vibrio”) and Neospora caninum, among...

Bovine herpesvirus 1 (BoHV-1), classified as an alphaherpesvirus, is a major pathogen of cattle. Primary infection is accompanied by various clinical manifestations such as infectious bovine rhinotracheitis, abortion, infectious pustular vulvovaginitis, and systemic infection in neonates. When animals survive, a life-long latent infection is established in nervous sensory ganglia. Several react...

The first report of disease caused by BoHV1 was made as a venereal disease in a bull and contact cows (Rychner, 1841) which was subsequently referred to as Blaschenausschlag in German literature. The viral aetiology of the disease was proved by Reisinger and Reimann (1928). The first published report on respiratory IBR came from Schroeder and Moys (1954) where they described an apparently new u...

Infectious bovine keratoconjunctivitis (IBK) is one of the most common diseases of cattle and is of major economic importance. If the primary aetiological agent, Moraxella bovis, is successfully eliminated from ocular tissues corneal ulcers heal at a constant rate. If treatment is unsuccessful ulcer reoccurrence may follow initial healing. Appropriate antimicrobial selection requires knowledge ...

Bovine herpes virus 1 (BHV-1) is primarily associated with clinical syndromes such as rhinotracheitis, pustular vulvovaginitis and balanoposthitis, abortion, infertility, conjunctivitis and encephalitis in bovine species. The main sources of infection are the nasal exudates and the respiratory droplets, genital secretions, semen, fetal fluids and tissues. The BHV-1 virus can become latent follo...

OBJECTIVE To assess long-term effects and risk factors for the efficacy of hyperimmunization protocols against infectious bovine rhinotracheitis (IBR) during a longitudinal field study of dairy and dairy-beef mixed farms. ANIMALS Approximately 7,700 cows from 72 farms. PROCEDURES Farms were assigned to 3 treatment groups (hyperimmunization groups [HIGs] 1 and 2, which were hyperimmunized wi...

Herpesviruses have mainly co-evolved with their hosts for millions of years. Consequently, different related host species may have been infected by various genetically related herpesviruses. Illustrating this concept, several ruminant alphaherpesviruses have been shown to form a cluster of viruses closely related to bovine herpesvirus 1 (BoHV-1): namely bovine herpesvirus 5, bubaline herpesviru...