Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Pesquisa Veterinária Brasileira (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2004000200008 |
Resumo: | Chicks infected during the first two weeks of life with chicken anaemia virus (CAV) manifest clinical disease that can be avoided if the breeder hens transfer enough antibodies to their progeny. The objective of the present work was to establish the prevalence and titer of anti-CAV antibodies in some Brazilian broiler hen breeder flocks and verify in which phase of life the birds were infected. A total of 1,709 serum samples from 12 broiler hen flocks vaccinated against CAV and 64 unvaccinated flocks were analyzed for CAV antibodies with an enzyme-linked immunosorbent assay (ELISA). All non-vaccinated breeder flocks were found to be infected with CAV, with 89% of the hens tested presenting antibodies, 52% of these with titers considered high enough to protect their progeny against CAV infection. Likewise, all vaccinated hens had antibody titer to CAV capable of conferring protection to their progeny. Thus, vaccination of hens seems capable of conferring protection to chicks against clinically apparent CAV-associated disease. |
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Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern BrazilAntibodiesavian pathologychicken anemia virusCAVepidemiologyprevalenceChicks infected during the first two weeks of life with chicken anaemia virus (CAV) manifest clinical disease that can be avoided if the breeder hens transfer enough antibodies to their progeny. The objective of the present work was to establish the prevalence and titer of anti-CAV antibodies in some Brazilian broiler hen breeder flocks and verify in which phase of life the birds were infected. A total of 1,709 serum samples from 12 broiler hen flocks vaccinated against CAV and 64 unvaccinated flocks were analyzed for CAV antibodies with an enzyme-linked immunosorbent assay (ELISA). All non-vaccinated breeder flocks were found to be infected with CAV, with 89% of the hens tested presenting antibodies, 52% of these with titers considered high enough to protect their progeny against CAV infection. Likewise, all vaccinated hens had antibody titer to CAV capable of conferring protection to their progeny. Thus, vaccination of hens seems capable of conferring protection to chicks against clinically apparent CAV-associated disease.Colégio Brasileiro de Patologia Animal - CBPA2004-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2004000200008Pesquisa Veterinária Brasileira v.24 n.2 2004reponame:Pesquisa Veterinária Brasileira (Online)instname:Colégio Brasileiro de Patologia Animal (CBPA)instacron:EMBRAPA10.1590/S0100-736X2004000200008info:eu-repo/semantics/openAccessCanal,Cláudio W.Ferreira,Danilo JoséMacagnan,MarisaFallavena,Luiz C. B.Moraes,Hamilton L. S.Wald,Vera B.eng2004-07-28T00:00:00Zoai:scielo:S0100-736X2004000200008Revistahttp://www.pvb.com.br/https://old.scielo.br/oai/scielo-oai.phpcolegio@cbpa.org.br||pvb@pvb.com.br0100-736X1678-5150opendoar:2004-07-28T00:00Pesquisa Veterinária Brasileira (Online) - Colégio Brasileiro de Patologia Animal (CBPA)false |
dc.title.none.fl_str_mv |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
title |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
spellingShingle |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil Canal,Cláudio W. Antibodies avian pathology chicken anemia virus CAV epidemiology prevalence |
title_short |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
title_full |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
title_fullStr |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
title_full_unstemmed |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
title_sort |
Prevalence of antibodies against chicken anaemia virus (CAV) in broiler breeders in Southern Brazil |
author |
Canal,Cláudio W. |
author_facet |
Canal,Cláudio W. Ferreira,Danilo José Macagnan,Marisa Fallavena,Luiz C. B. Moraes,Hamilton L. S. Wald,Vera B. |
author_role |
author |
author2 |
Ferreira,Danilo José Macagnan,Marisa Fallavena,Luiz C. B. Moraes,Hamilton L. S. Wald,Vera B. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Canal,Cláudio W. Ferreira,Danilo José Macagnan,Marisa Fallavena,Luiz C. B. Moraes,Hamilton L. S. Wald,Vera B. |
dc.subject.por.fl_str_mv |
Antibodies avian pathology chicken anemia virus CAV epidemiology prevalence |
topic |
Antibodies avian pathology chicken anemia virus CAV epidemiology prevalence |
description |
Chicks infected during the first two weeks of life with chicken anaemia virus (CAV) manifest clinical disease that can be avoided if the breeder hens transfer enough antibodies to their progeny. The objective of the present work was to establish the prevalence and titer of anti-CAV antibodies in some Brazilian broiler hen breeder flocks and verify in which phase of life the birds were infected. A total of 1,709 serum samples from 12 broiler hen flocks vaccinated against CAV and 64 unvaccinated flocks were analyzed for CAV antibodies with an enzyme-linked immunosorbent assay (ELISA). All non-vaccinated breeder flocks were found to be infected with CAV, with 89% of the hens tested presenting antibodies, 52% of these with titers considered high enough to protect their progeny against CAV infection. Likewise, all vaccinated hens had antibody titer to CAV capable of conferring protection to their progeny. Thus, vaccination of hens seems capable of conferring protection to chicks against clinically apparent CAV-associated disease. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2004000200008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-736X2004000200008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-736X2004000200008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Colégio Brasileiro de Patologia Animal - CBPA |
publisher.none.fl_str_mv |
Colégio Brasileiro de Patologia Animal - CBPA |
dc.source.none.fl_str_mv |
Pesquisa Veterinária Brasileira v.24 n.2 2004 reponame:Pesquisa Veterinária Brasileira (Online) instname:Colégio Brasileiro de Patologia Animal (CBPA) instacron:EMBRAPA |
instname_str |
Colégio Brasileiro de Patologia Animal (CBPA) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Veterinária Brasileira (Online) |
collection |
Pesquisa Veterinária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Veterinária Brasileira (Online) - Colégio Brasileiro de Patologia Animal (CBPA) |
repository.mail.fl_str_mv |
colegio@cbpa.org.br||pvb@pvb.com.br |
_version_ |
1754122227880558592 |