›› 2013, Vol. 40 ›› Issue (1): 196-198.

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Diagnosis of a Co-infection Caused by Infectious Bronchitis Virus and Escherichia coli in Three-Yellow Chickens

CHEN Zhen1,2, SHI Shao-hua1,2, LIN Su1,2, ZHU Chun-hua1,2, LIU Bin-qiong1,2, CAI Guo-zhang1,2, LIN Yu1,2, HUANG Yu1,2   

  1. 1. Animal Husbandry and Veterinary Institute, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China;
    2. Fujian Animal Diseases Control Technology Development Center, Fuzhou 350013, China
  • Received:2012-06-19 Online:2013-01-20 Published:2013-01-14

Abstract: Infectious bronchitis virus and Escherichia coli were the two serious dangers of the chicken industry. A group of Three-Yellow chickens had been experienced a co-infection caused by infectious bronchitis virus and Escherichia coli in southeastern region of Fujian province in spring to summer interfacing of 2011,characterized by overt symptoms and lesions. The causative agents had been isolated, a Escherichia coli strain with serotype of O78 identified by agglutination test, and a infectious bronchitis virus, named as FJ/11/05, identified by RT-PCR. Sequencing of M gene of FJ/11/05 indicated that there were closer relations between FJ/11/05 and American strains (M41 and Beaudette). However, a distinguished diversion exited in FJ/11/05 and vaccine strains (H120 and D41).

Key words: Three-Yellow chicken; infectious bronchitis virus; Escherichia coli

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