Lachrymal antibody response of specific pathogen free chickens and chickens with maternal immunity after infectious bronchitis virus vaccination
Author
dc.contributor.author
Toro, H.
Author
dc.contributor.author
Hidalgo, H.
Author
dc.contributor.author
Collingwood-Selby, A. N.
Admission date
dc.date.accessioned
2018-12-20T14:53:12Z
Available date
dc.date.available
2018-12-20T14:53:12Z
Publication date
dc.date.issued
1994
Cita de ítem
dc.identifier.citation
Preventtve Vetermary Medtcme, 18 (1994) 267-274
Identifier
dc.identifier.issn
01675877
Identifier
dc.identifier.other
10.1016/0167-5877(94)90051-5
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/157273
Abstract
dc.description.abstract
Lachrymal fluid specific IgG and IgA were detected by ELISA in chickens with specific maternal antibodies and in chickens free of antibodies (SPF), after vaccination at 1 day of age with the H-120 vaccine strain of infectious bronchitis virus. Samples were obtained at 3 day intervals and until Day 37 of age. Optical densities were in all instances low but significant differences could be detected within and between the experimental groups. Both class-specific immunoglobulins showed a similar kinetic pattern. Nevertheless, the SPF group increased its IgA level on Day 13 while chickens with maternal immunity increased their level on Day 16. The antibody levels of both IgG and IgA were also different, being higher in the SPF group. In both chicken groups, higher levels of IgA than IgG were detected.