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Figure  6 | Veterinary Research

Figure  6

From: Pathogenic characteristics of a QX-like infectious bronchitis virus strain SD in chickens exposed at different ages and protective efficacy of combining live homologous and heterologous vaccination

Figure  6

Antibody response in pathogenicity test and ciliostasis scores in vaccine efficacy test. A Antibody response induced by IBV strain SD at 9–16 days post-inoculation (dpi) in chickens inoculated at different ages. Serum with a titre ≥ 834 was considered positive. The numbers in bracket indicate the positive rate for IBV antibody in different groups. NC, not challenged. B ciliostasis scores in the vaccination groups at 7 days post-challenge (dpc) with IBV strain SD.

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Veterinary Research

ISSN: 1297-9716