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首页> 外文期刊>Tropical Animal Health and Production >Porcine reproductive and respiratory syndrome virus detection in Thailand during 2005-2010 in relation to clinical problems, pig types, regions, and seasons
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Porcine reproductive and respiratory syndrome virus detection in Thailand during 2005-2010 in relation to clinical problems, pig types, regions, and seasons

机译：2005-2010年泰国与临床问题，猪类型，地区和季节有关的猪繁殖与呼吸综合征病毒检测

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摘要

The objectives of the present study were to determine the prevalence of porcine reproductive and respiratory syndrome virus (PRRSV) in Thailand between 2005 and 2010. The study was conducted by retrospectively investigating the detection of PRRSV from different pig types including boars, sows, piglets, nursery pigs, and fattening pigs from six regions of Thailand, i.e., the northern, eastern, northeastern, central, western, and southern parts. The data were obtained from cases submitted to the Chulalongkorn University Veterinary Diagnostic Laboratory for PRRSV detection between 2005 and 2010. Frequency analyses and generalized linear models were used to evaluate the prevalence of PRRSV in relation to various factors. In total, 2,273 tissues (n = 636), semen (n = 210) and serum (n = 1,427) samples were included. PRRSV was detected in 32.6 % (740/2,273) of the pigs. The virus was found in 43.1 %, 15.7 %, and 30.3 % in the tissues, semen, and serum samples, respectively (P < 0.001). The prevalence of PRRSV was highest in 2005 (43.6 %) and lowest in 2009 (23.6 %) (P < 0.001). The prevalence of PRRSV was highest in nursery pigs (43.7 %) and lowest in boars (15.4 %) (P < 0.001). The prevalence of PRRSV in the hot season (34.9 %) was higher than that found in the cool season (28.1 %, P = 0.018) but did not differ significantly compared to rainy season (34.0 %, P = 0.486). The strain of PRRSV isolated in the present study was genotype 2 (54.5 %), genotype 1 (31.0 %), and mixed genotypes (14.5 %). It can be concluded that PRRSV was detected in the tissue samples more frequently than the semen and serum samples. The prevalence of PRRSV was high in the nursery pigs. A high prevalence of PRRSV was found in the hot season, indicating that climatic factors may also contribute to the prevalence of PRRSV in Thailand. Of all the PRRSV detected, 31.0 %, 54.5 %, and 14.5 % belonged to genotype 1, genotype 2, and mixed genotypes, respectively.
机译：本研究的目的是确定2005年至2010年之间泰国的猪繁殖与呼吸综合征病毒（PRRSV）的流行情况。该研究是通过回顾性调查从不同猪类型（包括公猪，母猪，仔猪，泰国六个地区（即北部，东部，东北，中部，西部和南部）的育苗猪和育肥猪。数据来自2005年至2010年间提交给朱拉隆功大学兽医诊断实验室进行PRRSV检测的病例。频率分析和广义线性模型用于评估PRRSV与各种因素的相关性。总共包括2,273个组织（n = 636），精液（n = 210）和血清（n = 1,427）样品。在32.6％（740 / 2,273）的猪中检测到PRRSV。在组织，精液和血清样品中分别发现该病毒的比例为43.1％，15.7％和30.3％（P <0.001）。 PRRSV的患病率在2005年最高（43.6％），在2009年最低（23.6％）（P <0.001）。 PRRSV的患病率最高的是保育猪（43.7％），最低的是公猪（15.4％）（P <0.001）。炎热季节的PRRSV患病率（34.9％）高于凉季的PRRSV患病率（28.1％，P = 0.018），但与雨季相比无显着差异（34.0％，P = 0.486）。在本研究中分离出的PRRSV菌株是基因型2（54.5％），基因型1（31.0％）和混合基因型（14.5％）。可以得出结论，在组织样品中检测到PRRSV的频率要比精液和血清样品高。保育猪中PRRSV的患病率很高。在炎热季节，PRRSV的流行很高，这表明气候因素也可能是泰国PRRSV流行的原因。在所有检测到的PRRSV中，分别有31.0％，54.5％和14.5％属于基因型1，基因型2和混合基因型。

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