Histopathology of two serotypes of infectious bronchitis virus in laying hens vaccinated in the rearing phase.
The comparative histopathology of 2 different strains of infectious bronchitis virus (T and N1/ 88) in vaccinated hens was studied at 110 wk of age. The Harderian gland showed similar histopathology in T- and N1/88-infected hens. The trachea and kidney of challenged vaccinated hens were protected to a moderate extent, but the oviduct was protected to only a small extent. The severity and persistence of lesions were greater in tubular shell gland, shell gland pouch, and kidney of the T-infected hens, whereas, for the magnum, N1/88 had a greater effect.
Chousalkar
K K
KK
Animal Science, School of Rural Science and Agriculture, University of New England, Armidale, New South Wales, 2351, Australia. kchousal@une.edu.au
Roberts
J R
JR
Reece
R
R
D000818:Animals; D002645:Chickens / Q000254:growth & development / Q000276:immunology / Q000821:virology*; D018352:Coronavirus Infections / Q000276:immunology / Q000517:prevention & control / Q000662:veterinary* / Q000821:virology; D005260:Female; D006243:Harderian Gland / Q000473:pathology / Q000821:virology; D001351:Infectious bronchitis virus / Q000145:classification* / Q000276:immunology*; D007668:Kidney / Q000473:pathology / Q000821:virology; D010057:Oviducts / Q000473:pathology / Q000821:virology; D011201:Poultry Diseases / Q000276:immunology* / Q000517:prevention & control / Q000821:virology*; D012703:Serotyping; D014132:Trachea / Q000473:pathology / Q000821:virology; D014765:Viral Vaccines / Q000008:administration & dosage* / Q000276:immunology*
D014765:Viral Vaccines