摘要
<正>鸡传染性支气管炎(infectious bronchitis,IB)是由传染性支气管炎病毒(Infectious bronchitis virus,IBV)引起的危害养鸡业的重要疾病之一[1-2]。由于IBV是单股RNA病毒,主要抗原基因为S1基因,其基因组极易发生突变重组,导致新基因型和变异株不断出现[3-5]。广西地区是三黄鸡的主产区之一,IB问题同样困扰着三黄鸡生产,存在多种类型IBV毒株的流行[6-8],且S1基因存在广泛的点突变和插入现象。
引文
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