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首页> 外文期刊>Irish Veterinary Journal >Phylogenetic comparison of porcine circovirus type 2 (PCV2) and porcine reproductive respiratory syndrome virus (PRRSV) strains detected in domestic pigs until 2008 and in 2012 in Croatia
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Phylogenetic comparison of porcine circovirus type 2 (PCV2) and porcine reproductive respiratory syndrome virus (PRRSV) strains detected in domestic pigs until 2008 and in 2012 in Croatia

机译：克罗地亚至2008年和2012年之前在家猪中检测到的猪圆环病毒2型（PCV2）和猪繁殖呼吸综合征病毒（PRRSV）菌株的系统发育比较

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Background Porcine circovirus type 2 (PCV2) and porcine reproductive and respiratory syndrome virus (PRRSV) have been present for the last 2 decades in Croatia, causing large economical losses in the pig production. The clinical features of the infections are mostly manifested by the development of respiratory problems, weight loss and poor growth performance, as well as reproductive failure in pregnant sows. Even though the infections are continuously recognized in some regions in Croatia, the heterogeneity of the detected viral strains from 2012 has not yet been investigated. The objective of this study was to compare virus strains of PCV2 and PRRSV detected until 2008 in Croatia with strains isolated in 2012 to gain a better epidemiological understanding of these two infections. Results PCV2 and PRRSV strains detected in 2012 in fattening pigs from regions where these two diseases have been previously described were compared to strains that have been detected in the same regions within the past two decades. The phylogenetic analysis revealed that the circulating PCV2 and PRRSV strains are distantly related to the previously described Croatian viral strains. However, when compared to known isolates from the GenBank a high genetic identity of PRRSV isolates with isolates from Hungary, Denmark and the Netherlands was found. Conclusion The results of this study reveal that even though PCV2 and PRRSV are constantly present in the investigated regions in Croatia, the viral strains found in 2012 genetically differ from those detected in earlier years. This indicates that new entries into the pig population appeared with regard to both infections, probably as a result of pig trade.
机译：背景技术克罗地亚在过去的20年中一直存在2型猪圆环病毒（PCV2）和猪繁殖与呼吸综合症病毒（PRRSV），这在养猪生产中造成了巨大的经济损失。感染的临床特征主要表现为呼吸问题的发展，体重减轻和生长性能差，以及怀孕母猪的生殖衰竭。即使在克罗地亚的某些地区不断识别出感染，但尚未对2012年以来检测到的病毒株的异质性进行调查。这项研究的目的是将到2008年在克罗地亚检测到的PCV2和PRRSV病毒株与2012年分离出的病毒株进行比较，以更好地了解这两种感染的流行病学。结果将2012年在先前描述过这两种疾病的地区的育肥猪中检测到的PCV2和PRRSV菌株与过去二十年来在同一地区检测到的PCV2和PRRSV菌株进行了比较。系统发育分析表明，循环中的PCV2和PRRSV毒株与先前描述的克罗地亚病毒毒株关系密切。但是，与已知的GenBank分离株相比，发现PRRSV分离株与匈牙利，丹麦和荷兰的分离株具有很高的遗传同一性。结论这项研究的结果表明，即使在克罗地亚的调查区域中不断出现PCV2和PRRSV，2012年发现的病毒株在遗传上也与早年发现的病毒株不同。这表明这两种感染均出现了新的进入猪群的情况，这可能是由于养猪交易造成的。

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