Acta Agriculturae Boreali-Sinica ›› 2024, Vol. 39 ›› Issue (6): 210-215. doi: 10.7668/hbnxb.20194602

Special Issue: Plant protection Animal husbandry

• Animal Husbandry·Fisheries·Veterinarian • Previous Articles     Next Articles

Isolation,Identification and Complete Genome Sequence Analysis of a BVDV Strain

LÜ Xiangyu1, WEN Shubo1, ZHAO Lixia2, LIN Hao3, HAN Jianjian4, YANG Fang4, GUO Shuai4, ZHAI Jingbo5, LIU Kai1,6   

  1. 1 College of Animal Science and Technology,Inner Mongolia Minzu University,Tongliao 028000,China
    2 The Spirit Jinyu Biological Pharmaceutical Co.,Ltd.,Hohhot 010000,China
    3 Inner Mongolia Penglai Agriculture and Animal Husbandry Co.,Ltd.,Hure Banner 028200,China
    4 Animal Disease Prevention and Control Center of Tongliao of Inner Mongolia,Tongliao 028000,China
    5 Institute of Innovative Research on Zoonoses,Inner Mongolia Minzu University,Tongliao 028000,China
    6 Inner Mongolia Autonomous Region Beef Cattle Disease Prevention and Control Engineering Technology Research Center,Tongliao 028000,China
  • Received:2024-08-24 Published:2024-12-28

Abstract:

Investigating the predominant genotypes of Bovine viral diarrhea virus(BVDV)infecting cattle in Tongliao,Inner Mongolia,to provide reference for the BVDV epidemiology and prevention and control.In the preliminary phase of the experiment,fecal samples from diarrheic calves were collected at a cattle farm in Tongliao,Inner Mongolia.These samples were tested using PCR to detect BVDV positivity.Positive fecal samples were then inoculated into madin-darby bovine kidney cells(MDBK)for isolation.The isolated strains were identified using RT-PCR and indirect immunofluorescence staining.Subsequently,the full-length genome of the isolates was sequenced,followed by genetic evolution analysis and genotype determination based on sequences of the 5'UTR,Npro,and E2 genes.The results indicated that this experiment successfully isolated a strain of BVDV,designated as NM-21.Inoculation of NM-21 into MDBK did not induce cytopathic effects,indicating it was a non-cytopathic strain(NCP).Both RT-PCR and indirect immunofluorescence staining confirmed its positivity,with a virus titer of 10-3 TCID50/mL.Based on the full-length genomic sequence,and homology and genetic evolution analysis of the 5'UTR,Npro,and E2 gene sequences,the isolate NM-21 showed the highest nucleotide homology with the BVDV-1c subtype strain NM2103(GenBank accession number ON337882.1)from Inner Mongolia,China.

Key words: Bovine viral diarrhea virus, BVDV-1c subtype, Isolation, Identification, Genetic evolution analysis

Cite this article

LÜ Xiangyu, WEN Shubo, ZHAO Lixia, LIN Hao, HAN Jianjian, YANG Fang, GUO Shuai, ZHAI Jingbo, LIU Kai. Isolation,Identification and Complete Genome Sequence Analysis of a BVDV Strain[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(6): 210-215. doi: 10.7668/hbnxb.20194602.

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