National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692 Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Infectious bronchitis virus (IBV) is a Corona virus often found associated with a number of pathological conditions in poultry. The present work is aimed to study the pathogenicity of the new IBV nephropathogenic isolate, (IND/AHL/16/01) in experimentally infected colored broiler chicken. This isolate was inoculated into a total of 150, twenty days old seronegative Vanaraja birds through intranasal and intravenous routes using 104.7 Embryo infective dose50 (EID50/ml). Blood collection was done on 3, 7, 14, 21 DPI (Days post infection) for hematological parameters. The birds developed lymphocytophilia, monocytosis and heteropenia by 21 DPI. The degree of lymphocytophilia, heteropenia and monocytosis is pronounced in I/V 1ml group, followed by I/N 2ml and I/N 1ml groups. They also developed haemoglobinemia. From this it can be concluded that this IBV isolate can target bird’s immune system and makes them less immune to secondary bacterial infections.
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