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Abstract
AIM: This communication describes the isolation of herpesvirus during routine export examination of semen collected from red deer stags in New Zealand.
METHODS: Virus isolation was carried out using bovine embryonic lung (BEL) cells and viruses were characterised by direct immunofluorescense, restriction-fragment-length polymorphism analysis (RFLP), polymerase chain reaction (PCR) analysis and nucleotide sequencing.
RESULTS: Herpesvirus was isolated from red deer semen on 2 different occasions from different animals. In both cases the virus was identified as cervine herpesvirus-1 (CvHV-1), based on RFLP, PCR and sequence analysis. Nucleotide sequence analysis of the glycoprotein-D gene showed 99.7% homology to the Banffshire strain of CvHV-1 and 89.5 %, 89.2 %, 85.3 % and 79.6% homology to bovine herpesvirus 1.2 (BoHV-1.2), bovine herpesvirus 1.1 (BoHV-1.1), cervine herpesvirus-2 (CvHV-2) and caprine herpesvirus-1 (CpHV-1), respectively.
CONCLUSION: This is the first time that CvHV-1 has been isolated in New Zealand. Its inclusion in serological surveys will allow the prevalence of CvHV-1 in the red deer population to be assessed in this country. The clinical significance of CvHV- 1 infection in New Zealand red deer herds has yet to be determined.