畢業(yè)設(shè)計(jì)(論文)外文參考資料及譯文-中國(guó)高致病性豬繁殖與呼吸綜合征病毒的起源(已修改)
2025-06-21 02:34 本頁(yè)面
【正文】 畢 業(yè) 設(shè) 計(jì)（論 文） 外 文 參 考 資 料 及 譯 文 譯文題目： 中國(guó)高致病性豬繁殖與呼吸綜合征病毒的起源 學(xué)生姓名： 楊力元 學(xué) 號(hào)： 0710110121 專 業(yè)： 動(dòng)物醫(yī)學(xué) 所在學(xué)院： 動(dòng)物科學(xué)與技術(shù)學(xué)院 指導(dǎo)教師： 張志成 職 稱： 講師 2021 年 3 月 9 日 Origin of Highly Pathogenic Porcine Reproductive and Respiratory Syndrome Virus, China A highly pathogenic porcine reproductive and respiratory syndrome virus (HPPRRSV), which affected 2 million pigs, emerged in early 2021 in the People’s Republic of China. The disease was characterized by high fever (41176。C), high illness rates (50%–100%), and high death rates (20%–100%) for pigs of all ages . A number of HPPRRSVs have been isolated from 2021 through 2021 from infected pigs in different provinces of China and confirmed to be the causative agent of the new outbreaks . These HPPRRSVs have a deletion of 30 amino acids in nonstructural protein 2 (NSP2). However, the evolutionary origin and path of the HPPRRSV remain unknown. We analyzed the fulllength sequences of 67 PRRSVs: 35 HPPRRSVs (HuN4 and LNSY081 isolated in our laboratory and 33 viruses isolated in other laboratories), 28 classic PRRSVs (18 viruses isolated from China and 10 viruses representing other Asian countries and North America), and 4 mercially available attenuated live PRRSV vaccine viruses. Except for the 2 viruses we isolated (HuN4 and LNSY081), the fulllength sequences of the other 65 viruses were obtained from and deduced ami
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