ISOLATION OF A HAEMAGGLUTINATING ADENO‐LIKE VIRUS RELATED TO VIRUS 127 FROM AN AUSTRALIAN POULTRY FLOCK WITH AN EGG DROP SYNDROME

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Abstract
An egg drop syndrome within Australian broiler poultry is described. The syndrome was characterized by delayed onset of laying, a lower peak in egg production and a drop in egg production shortly after reaching peak production. Antibody to virus 127 was detected in 102 of 106 fowl, sera tested. Two hemagglutinating viruses were isolated from 1 affected flock and 1 was subjected to further study. It was adenovirus-like on EM examination and hemagglutination was not inhibited by a specific antiserum to Newcastle disease virus. An antiserum was raised in White Leghorn fowl against the isolate and this antiserum was found to cross-react with virus 127, a prototype virus of egg drop syndrome 76.