Genetic characterization and clinical characteristics of bovine viral diarrhea viruses in cattle herds of Heilongjiang province, China.

IF 0.8 4区农林科学 Q3 VETERINARY SCIENCES

Iranian journal of veterinary research Pub Date : 2022-01-01 DOI:10.22099/IJVR.2021.38650.5625

Y Zhou, Y Ren, G Dai, X Li, Y Xiang, J Zhang, Y Jiang, S Jiang, X Hou, Z Zhu, R Wu

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引用次数: 1

Abstract

Background: Heilongjiang province is the main cattle-producing area in China, and molecular epidemiological studies of bovine viral diarrhea viruses (BVDV) in cattle have not been performed in the province.

Aims: The objective of this research was to determine the genetic and clinical characteristics of BVDV in cattle.

Methods: Fifty-three BVDV-positive clinical samples were collected from 22 cattle farms in Heilongjiang, and the 5´-untranslated region (5´-UTR) was used to carry out a phylogenetic analysis of the viruses.

Results: The similarity of the 5´-UTR sequences among these BVDVs was 84.2%-100%, and the phylogenetic analysis showed that all viruses belong to the BVDV-1 species, which is classified into five subtypes: BVDV-1b (47.17%, n=25), 1c (15.09%, n=8), 1d (16.98%, n=9), 1 m (3.77%, n=2), and 1o (16.98%, n=9). The statistical results showed that the BVDV-1b subtype had a positive correlation with gastrointestinal disease (P<0.05; 95% CI: 1.19 to 3.34). There were up to three or four BVDV-1 subtypes in some dairy cattle farms, but farms with a single subtype were prevalent (5/10).

Conclusion: BVDV-1b is predominant in cattle herds of Heilongjiang province, China, and shows a positive correlation with gastrointestinal disease. BVDV-1o was found for the first time in Chinese cattle, which increased the complex distribution of BVDV-1 subtypes in cattle herds of China.

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黑龙江省牛病毒性腹泻病毒的遗传特征及临床特征

背景:黑龙江省是中国主要产牛地区，目前尚未开展牛病毒性腹泻病毒(BVDV)的分子流行病学研究。目的:本研究的目的是确定牛BVDV的遗传和临床特征。方法:从黑龙江省22个牛场采集53份bvdv阳性临床样本，利用5′-UTR区对病毒进行系统发育分析。结果:5′-UTR序列的相似性为84.2% ~ 100%，系统发育分析表明，所有病毒均属于BVDV-1种，该病毒可分为5个亚型:BVDV-1b (47.17%， n=25)、1c (15.09%， n=8)、1d (16.98%， n=9)、1 m (3.77%， n=2)和10 (16.98%，n=9)。统计结果显示，BVDV-1b亚型与胃肠道疾病呈正相关(p结论:BVDV-1b在中国黑龙江省牛群中占主导地位，与胃肠道疾病呈正相关。bvdv - 10首次在中国牛群中发现，增加了BVDV-1亚型在中国牛群中的复杂分布。

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来源期刊

Iranian journal of veterinary research 农林科学-兽医学

CiteScore

1.70

自引率

8.30%

发文量

期刊介绍： The Iranian Journal of Veterinary Research(IJVR) is published quarterly in 4 issues. The aims of this journal are to improve and expand knowledge in all veterinary fields. It is an international journal indexed by the Thomson Institute for Scientific Information (ISI), Elsevier, Scopus, CAB International, Veterinary Bulletin and several other international databases. Research papers and reports on a wide range of veterinary topics are published in the journal after being evaluated by expert reviewers.The Editor-in-Chief is responsible for the editorial content of the journal—including peer-reviewed manuscripts—and the timing of its publication.