[Comparison of sensitivity of four turkey genetic types infected with virulent or attenuated strains of haemorrhagic enteritis virus].
Four turkey genetic strains reacted differently to an experimental infection with different strains, virulent or attenuated, of haemorrhagic enteritis virus. Criteria used were: clinical signs (diarrhoea, mortality), daily weight gain, histopathology and virus recovery in the spleen. Turkeys of one genetic type developed more quickly the disease; the serological response to vaccine using ELISA and agar gel precipitation techniques was also faster. Turkeys of two other genetic types responded later both to the virus and the vaccine. Turkeys of the fourth genetic type responded last. The origin of this discrepancy is discussed.
Gros
F X
FX
Laboratoire National de Pathologie Aviaire, Ploufragan, France.
Toquin
D
D
Guittet
M
M
Bennejean
G
G