Epidemiological investigation of fowl adenovirus (FAdV) infections in ducks and geese in Shandong Province, China.

Samples of suspected FAdV-infected waterfowl from farms in Shandong Province were collected from 2019 to 2022.Single infections with FAdV were less frequent than mixed infections.477 out of 792 samples (60.

[Cloning, prokaryotic expression of chicken interferon-alpha gene and study on antiviral effect of recombinant chicken interferon-alpha].

The full length of chicken interferon alpha (ChIFN-alpha) gene was amplified by the polymerase chain reaction (PCR) from total liver genome of Sanhuang meat-chicken and sequenced. The amplified gene was about 582bp. The coding region for mature protein (489bp) was subcloned into pET-28a(+).