Isolation of a Haemagglutinating Adeno‐like Virus Related to Virus 127 From an Australian Poultry Flock With an Egg Drop Syndrome

Abstract

An egg drop syndrome within Australian broiler poultry is described. The syndrome was characterised 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 serums tested. Two haemagglutinating viruses were isolated from one affected flock and one was subjected to further study. It was adenovirus-like on electron-microscopic examination and haemagglutination 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.

Differentiation of egg drop syndrome virus isolates by restriction endonuclease analysis of virus dna

“…Two chicken viruses BC 14 (h, 1976) and V-S/512 (i, 1979) and two duck viruses (3W/02E (j, 1976) and 3W/07C (k, 1976) were obtained from Dr W. Baxendale, Intervet UK Ltd. The comparison also included an Australian virus (1, Firth et al, 1981) and a Belgian virus (m, Meulemans era/., 1979) both of which were isolated from chickens.…”

An in vitro and in vivo evaluation of the virulence of egg drop syndrome virus for the chicken reproductive tract

“…Egg drop syndrome 1976 (EDS), caused by an adenovirus (Baxendale, 1978;Firth et al, 1981), is an economically important disease of laying hens characterized by depressed egg production, laying of soft-shelled or shell-less eggs, and failure to reach peak production (Van Eck et al, 1976;McFerran et al, 1978). The causative EDS virus is the sole member of Group III avian adenoviruses.…”

Purification and hemagglutinating properties of egg drop syndrome 1976 virus

“…An adenovirus was identified as the causative agent of the disease in several countries of the world (2,6,10,11,16). We also isolated a virus in an outbreak of the disease in Japan and identified the virus to be EDS-76 virus on the basis of its physico-ehemical and serological properties (7).…”