Analyses of the 5'NCR and E2 gene of bovine viral diarrhea virus isolated from cattle and commercial imported bovine fetal serums in Okayama Prefecture [Japan]

During the period 2003 to 2006, nine isolates and two detected genes of the bovine viral-diarrhea virus (BVDV) were recovered from six persistently infected (PI) cattle in Okayama Prefecture or commercial imported bovine fetal serum (FBS). Phylogenetic analysis of the 5' non-coding region (5�...

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Published inJournal of the Japan Veterinary Medical Association Vol. 61; no. 9; pp. 693 - 698
Main Authors Fukutomi, T.(Okayama-ken. Government Office (Japan)), Oouchi, M, Sawada, K, Hirai, N, Hada, M, Nagai, M
Format Journal Article
LanguageJapanese
Published Japan Veterinary Medical Association 20.09.2008
Subjects
BLOOD SERUM
BOVIN
BOVINE DIARRHOEA PESTIVIRUS
bovine viral-diarrhea virus
CATTLE
EPIDEMIOLOGIA
epidemiological analysis
EPIDEMIOLOGIE
EPIDEMIOLOGY
FETO
FOETUS
GANADO BOVINO
genetic analysis
GENETIC VARIATION
IMPORTACIONES
IMPORTATION
IMPORTS
JAPAN
JAPON
PESTIVIRUS DE LA DIARREA BOVINA
PESTIVIRUS MALADIE DES MUQUEUSES
SERUM SANGUIN
SUERO SANGUINEO
VARIACION GENETICA
VARIATION GENETIQUE
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Summary:During the period 2003 to 2006, nine isolates and two detected genes of the bovine viral-diarrhea virus (BVDV) were recovered from six persistently infected (PI) cattle in Okayama Prefecture or commercial imported bovine fetal serum (FBS). Phylogenetic analysis of the 5' non-coding region (5'NCR) of the isolates which are derived from PI cattle were classified as subtype BVDV-1a (two isolates), 1b (two isolates) and 1c (three isolates), and the isolates and detected genes derived from FBSs were classified as subtype BVDV-1b (1 isolate: derived from El Salvador), 1d (1 isolate: derived from Canada) and 1c (detected 2 genes: derived from Canada), respectively. Sequence analysis of the E2 gene suggested that the BVDV that was derived from Hokkaido was transmitted via a public pasture in Okayama Prefecture, and suggested that inappropriate active BVDV vaccine inoculation of the cattle in early pregnancy produced the PI calf. These results suggested that analysis of the E2 gene, which is more varied, in comparison with 5'NCR is useful in the epidemiological investigation of field BVDV isolates. The results of an examination of FBS suggested that BVDV-1d, which has been isolated in Europe, has already been transmitted to Canada. This data demonstrated that BVDV-1d could invade Japan in the future through imported cattle.
Bibliography:L73
2008008206
ISSN:0446-6454
2186-0211
DOI:10.12935/jvma1951.61.693