Clinical effects, virological and serological responses in chickens following in-ovo inoculation of reticuloendotheliosis virus.
Vet Microbiol
; 14(4): 411-7, 1987 Sep.
Article
em En
| MEDLINE
| ID: mdl-2825400
ABSTRACT
Six-day-old embryonated specific pathogen free chicken eggs were inoculated with reticuloendotheliosis virus (REV) into the yolk sac and were incubated until they hatched. The hatchability of eggs inoculated with REV was significantly less (P less than 0.025) than that of media-inoculated controls. Although there were no significant differences in the body weights of these chickens at hatching, there were differences (P less than 0.001) at 6, 25 and 51 days of age between the infected and control chickens. Six of 10 chickens hatched from eggs inoculated with REV had feathering defects at 6 days of age. All chickens hatched from infected eggs had cell-free viraemia and antigenaemia, but not precipitating antibodies. Some of these chickens had very low neutralising antibody titres (less than 45) when examined at 25 and 37 days of age, as did all 10 chickens at 51 days of age. A low rate of horizontal transmission was indicated by the detection of antibodies at 37 and 51 days of age in chickens running in contact with the chickens hatched from eggs inoculated with REV.
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Base de dados:
MEDLINE
Assunto principal:
Doenças das Aves Domésticas
/
Retroviridae
/
Infecções Tumorais por Vírus
/
Galinhas
/
Vírus da Reticuloendoteliose
Idioma:
En
Ano de publicação:
1987
Tipo de documento:
Article