To meet the growing challenge: research of avian infectious bronchitis in China

Abstract:

Since first isolated in America in 1937, avian infectious bronchitis virus causes serious economic loss to the poultry industry worldwide. Because of vast territory and climate diversity, the domestic epidemic situation of infectious bronchitis virus is very complex. The research and practice of isolation of pathogen, molecular epidemiology, detecting techniques, vaccine and integrated preventing & controlling techniques of infectious bronchitis in China is reviewed in this paper. At present, a variety of strains coexist in China, and the dominant epidemic strains are QX genotype. Moreover, the widely used vaccine belongs to Mass serotype such as H120, but 4/91 serotype vaccine and LDT3-A vaccine have also been used gradually. The combination immunization of attenuated live vaccine and inactivated vaccine can effectively control the economic loss of the poultry industry.

Key words:Avian infectious bronchitis, China, Molecular epidemiology, Immune procedure, Treatment by Chinese herbs