Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3382/ps/pez248 http://hdl.handle.net/11449/201186 |
Resumo: | In commercial layer poultry farming, molt induction is an important tool used by egg producers to prolong the production cycle of laying hens. Conventional molt induction programs involve total feed withdrawal, which raises questions about animal welfare and increased infection susceptibility. The high incidence of paratyphoid salmonellosis infections in commercial poultry farming is still an important health challenge because in addition to affecting the birds, such infections also cause public health problems. In this context, experiments were performed with laying hens at 79 wk of age to compare the conventional forced molting method (fasting) with an alternative method (free wheat bran supply) and determine their effect on the persistence of vaccine antibodies against Newcastle disease, the control and reduction of experimentally inoculated Salmonella Enteritidis, and the performance and egg quality of hens. A reduction (P < 0.05) of Salmonella Enteritidis in the crop and lower production of corticosterone were observed in the birds that received wheat bran compared with those subjected to total fasting. Moreover, a better performance (P < 0.05) with regard to egg production, egg mass, and feed conversion/kg and dozen eggs was observed in the hens that received the alternative treatment compared to the conventional forced molting method. Thus, the use of wheat bran for forced molting was found to be feasible and met the welfare needs of the hens. |
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Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of moltingcorticosteroneegg qualitylaying hensmolt inductionSalmonella EnteritidisIn commercial layer poultry farming, molt induction is an important tool used by egg producers to prolong the production cycle of laying hens. Conventional molt induction programs involve total feed withdrawal, which raises questions about animal welfare and increased infection susceptibility. The high incidence of paratyphoid salmonellosis infections in commercial poultry farming is still an important health challenge because in addition to affecting the birds, such infections also cause public health problems. In this context, experiments were performed with laying hens at 79 wk of age to compare the conventional forced molting method (fasting) with an alternative method (free wheat bran supply) and determine their effect on the persistence of vaccine antibodies against Newcastle disease, the control and reduction of experimentally inoculated Salmonella Enteritidis, and the performance and egg quality of hens. A reduction (P < 0.05) of Salmonella Enteritidis in the crop and lower production of corticosterone were observed in the birds that received wheat bran compared with those subjected to total fasting. Moreover, a better performance (P < 0.05) with regard to egg production, egg mass, and feed conversion/kg and dozen eggs was observed in the hens that received the alternative treatment compared to the conventional forced molting method. Thus, the use of wheat bran for forced molting was found to be feasible and met the welfare needs of the hens.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)School of Veterinary Medicine and Animal Science (FMVZ) Sao Paulo State University (UNESP)School of Veterinary Medicine and Animal Science (FMVZ) Sao Paulo State University (UNESP)CNPq: 444121/2014-5Universidade Estadual Paulista (Unesp)Andreatti Filho, R. L. [UNESP]Milbradt, E. L. [UNESP]Okamoto, A. S. [UNESP]Silva, T. M. [UNESP]Vellano, I. H.B. [UNESP]Gross, L. S. [UNESP]Oro, C. S. [UNESP]Hataka, A. [UNESP]2020-12-12T02:26:16Z2020-12-12T02:26:16Z2019-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4416-4425http://dx.doi.org/10.3382/ps/pez248Poultry Science, v. 98, n. 10, p. 4416-4425, 2019.1525-31710032-5791http://hdl.handle.net/11449/20118610.3382/ps/pez2482-s2.0-85072508459Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengPoultry Scienceinfo:eu-repo/semantics/openAccess2021-10-22T12:25:16Zoai:repositorio.unesp.br:11449/201186Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-22T12:25:16Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
title |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
spellingShingle |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting Andreatti Filho, R. L. [UNESP] corticosterone egg quality laying hens molt induction Salmonella Enteritidis |
title_short |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
title_full |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
title_fullStr |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
title_full_unstemmed |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
title_sort |
Salmonella Enteritidis infection, corticosterone levels, performance and egg quality in laying hens submitted to different methods of molting |
author |
Andreatti Filho, R. L. [UNESP] |
author_facet |
Andreatti Filho, R. L. [UNESP] Milbradt, E. L. [UNESP] Okamoto, A. S. [UNESP] Silva, T. M. [UNESP] Vellano, I. H.B. [UNESP] Gross, L. S. [UNESP] Oro, C. S. [UNESP] Hataka, A. [UNESP] |
author_role |
author |
author2 |
Milbradt, E. L. [UNESP] Okamoto, A. S. [UNESP] Silva, T. M. [UNESP] Vellano, I. H.B. [UNESP] Gross, L. S. [UNESP] Oro, C. S. [UNESP] Hataka, A. [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Andreatti Filho, R. L. [UNESP] Milbradt, E. L. [UNESP] Okamoto, A. S. [UNESP] Silva, T. M. [UNESP] Vellano, I. H.B. [UNESP] Gross, L. S. [UNESP] Oro, C. S. [UNESP] Hataka, A. [UNESP] |
dc.subject.por.fl_str_mv |
corticosterone egg quality laying hens molt induction Salmonella Enteritidis |
topic |
corticosterone egg quality laying hens molt induction Salmonella Enteritidis |
description |
In commercial layer poultry farming, molt induction is an important tool used by egg producers to prolong the production cycle of laying hens. Conventional molt induction programs involve total feed withdrawal, which raises questions about animal welfare and increased infection susceptibility. The high incidence of paratyphoid salmonellosis infections in commercial poultry farming is still an important health challenge because in addition to affecting the birds, such infections also cause public health problems. In this context, experiments were performed with laying hens at 79 wk of age to compare the conventional forced molting method (fasting) with an alternative method (free wheat bran supply) and determine their effect on the persistence of vaccine antibodies against Newcastle disease, the control and reduction of experimentally inoculated Salmonella Enteritidis, and the performance and egg quality of hens. A reduction (P < 0.05) of Salmonella Enteritidis in the crop and lower production of corticosterone were observed in the birds that received wheat bran compared with those subjected to total fasting. Moreover, a better performance (P < 0.05) with regard to egg production, egg mass, and feed conversion/kg and dozen eggs was observed in the hens that received the alternative treatment compared to the conventional forced molting method. Thus, the use of wheat bran for forced molting was found to be feasible and met the welfare needs of the hens. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-01 2020-12-12T02:26:16Z 2020-12-12T02:26:16Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.3382/ps/pez248 Poultry Science, v. 98, n. 10, p. 4416-4425, 2019. 1525-3171 0032-5791 http://hdl.handle.net/11449/201186 10.3382/ps/pez248 2-s2.0-85072508459 |
url |
http://dx.doi.org/10.3382/ps/pez248 http://hdl.handle.net/11449/201186 |
identifier_str_mv |
Poultry Science, v. 98, n. 10, p. 4416-4425, 2019. 1525-3171 0032-5791 10.3382/ps/pez248 2-s2.0-85072508459 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Poultry Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4416-4425 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1803045926471729152 |