禽霍亂巴氏桿菌的分離鑒定及基因分型
[Abstract]:In order to identify the pathogenic species and their genotypes of suspected avian cholera cases, bacteria isolation techniques were used to isolate and culture pathogenic bacteria in laboratory, and traditional methods and molecular biological methods were used to identify the isolated bacteria. PCR amplification and gene sequence analysis were used for genotyping of isolated bacteria. The results showed that the isolated bacteria had typical culture characteristics of Pasteurella multocida (Pasteurella multocida,Pm), colony morphology, bacterial staining, physiological and biochemical characteristics were consistent with those of Pasteurella multocida, and 457bp gene fragment was amplified by PCR. Five pairs of primers were used for genotyping of isolated bacteria. Only A-type primers were used to amplify the target gene fragment with size of 1 050bp. The sequence analysis also showed that the homology of the capsule specific gene between the isolated strain and the reference strain of Pasteurella multocida was 97.6% and 100.0.The phylogeny was in the same evolutionary branch as that of Pasteurella multocida type A. The results showed that the suspected avian cholera case was caused by Pasteurella multocida type A. the results of this study will provide reference for the prevention and control of avian cholera.
【作者單位】: 貴州大學(xué)動物科學(xué)學(xué)院;貴州省動物疫病與獸醫(yī)公共衛(wèi)生重點(diǎn)實(shí)驗(yàn)室;長順縣動物疫病預(yù)防控制中心;
【基金】:貴州省農(nóng)業(yè)攻關(guān)項(xiàng)目“畜禽源主要病原菌藥物防控技術(shù)創(chuàng)新與示范”(黔科合NY[2014]3042號) 貴州省科技創(chuàng)新人才團(tuán)隊(duì)項(xiàng)目(黔科合人才團(tuán)隊(duì)[2015]4016號)
【分類號】:S852.61
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