Characterization of field bovine herpesvirus samples using random amplified polymorphic DNA (RAPD)

Area of Science:

• Veterinary Virology
• Molecular Biology
• Genetics

Background:

• Bovine herpesvirus 1 (BoHV-1) and Bovine herpesvirus 5 (BoHV-5) are closely related Alphaherpesvirinae viruses with distinct pathogenicity.
• BoHV-5 causes fatal meningoencephalitis in calves, while BoHV-1 is associated with infectious bovine rhinotracheitis (IBR).
• Genetic differences likely explain variations in virulence and epidemiology between BoHV-1 and BoHV-5.

Purpose of the Study:

• To establish Random Amplified Polymorphic DNA (RAPD) analysis for characterizing bovine herpesvirus field samples.
• To investigate the genetic relationship of Brazilian BoHV isolates from semen and CNS with reference strains.
• To evaluate RAPD as a diagnostic and epidemiological tool for bovine herpesviruses.

Main Methods:

• Random Amplified Polymorphic DNA (RAPD) technique was employed.
• Phylogenetic analysis was performed on the generated DNA profiles.
• Two different primers were utilized for amplification.
• Brazilian BoHV field samples were compared with BoHV-1.1 and BoHV-1.2 reference subtypes.

Main Results:

• RAPD analysis successfully differentiated field samples into BoHV-1.1, BoHV-1.2, and BoHV-5 groups.
• The technique provided clear separation between the different bovine herpesvirus types.
• RAPD demonstrated utility in analyzing viruses from both semen and central nervous system samples.

Conclusions:

• RAPD analysis is a reliable method for distinguishing between BoHV-1 subtypes and BoHV-5.
• This molecular technique serves as a valuable diagnostic tool for bovine herpesviruses.
• RAPD analysis can be effectively used for molecular epidemiological studies of bovine herpesviruses.