Abstract
Fowl adenovirus-4 (FAdV-4) causes hydropericardium syndrome (HPS) in poultry worldwide. An understanding of viral structural protein composition is important for developing novel immunodiagnostics and immunoprophylactics. Here we report isolation, culture, molecular and protein profile of FAdV-4 isolates recovered from HPS outbreaks in chicken in the states of Himachal Pradesh and Tamil Nadu in India. We performed a sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western blotting-based protein profiling of FAdV-4 isolates against a reference FAdV-1 or Chicken Embryo Lethal Orphan (CELO) virus. SDS-PAGE analysis showed that seven protein bands in FAdV-4 isolates were similar to CELO expect an additional band of 110 kDa in CELO virus. On Western blotting, two protein fractions of 43 kDa and 78 kDa size were observed in FAdV-4 isolates. Overall, results show that FAdV-4 isolates recovered from different regions of the country had similar protein profile and possibly a common source of origin.
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