Techniques to minimize the effects of acute heat stress or chronic in broilers
Autor(a) principal: | |
---|---|
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/10.1590/1806-9061-2018-0962 http://hdl.handle.net/11449/198403 |
Resumo: | High environmental temperature is limiting factor in broiler production. In order to minimize the undesirable consequences of acute or chronic heat stress, the techniques of fixed dietary electrolyte balance and early heat conditioning were evaluated. The objective of this study was to evaluate the possible interactions and effects of dietary electrolyte balance and early heat conditioning on feed intake, body weight, feed conversion ratio, mortality, energy bioeconomic index, fecal moisture, abdominal fat, and breast meat color (L*a*b*) of broilers submitted to chronic or acute heat stress. In total, 1280 chicks, were equally divided in experiment I (chronic heat stress, 6h/day at 32°C from 35 to 39 d of age) and II (acute heat stress, 36 °C for 6h at 38 days of age). The data of both experiments were combined and analyzed according to a 2x2x2 factorial arrangement (early heat conditioning (ETC) or not; fixed dietary electrolyte balance (EB) or not; and exposure to acute or chronic heat stress). ETC consisted of exposing 5-d-old birds to 36.0 °C for 24 hours. No interaction among the evaluated factors was detected. Birds exposed to acute heat stress presented significantly higher compared with chronic heat stress. Fixed dietary EB resulted in significantly higher fecal moisture. Lower abdominal fat percentage was obtained in birds exposed to chronic relative to acute heat stress. Higher breast meat L* and b* values were observed in birds exposed to acute heat stress than those submitted to chronic heat stress, indicating worse meat quality. |
id |
UNSP_f0ea70049e9340ba96f3d47b75171645 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/198403 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Techniques to minimize the effects of acute heat stress or chronic in broilersAnimal nutritionBroilersElectrolyte balancePale muscle syndromeTemperatureHigh environmental temperature is limiting factor in broiler production. In order to minimize the undesirable consequences of acute or chronic heat stress, the techniques of fixed dietary electrolyte balance and early heat conditioning were evaluated. The objective of this study was to evaluate the possible interactions and effects of dietary electrolyte balance and early heat conditioning on feed intake, body weight, feed conversion ratio, mortality, energy bioeconomic index, fecal moisture, abdominal fat, and breast meat color (L*a*b*) of broilers submitted to chronic or acute heat stress. In total, 1280 chicks, were equally divided in experiment I (chronic heat stress, 6h/day at 32°C from 35 to 39 d of age) and II (acute heat stress, 36 °C for 6h at 38 days of age). The data of both experiments were combined and analyzed according to a 2x2x2 factorial arrangement (early heat conditioning (ETC) or not; fixed dietary electrolyte balance (EB) or not; and exposure to acute or chronic heat stress). ETC consisted of exposing 5-d-old birds to 36.0 °C for 24 hours. No interaction among the evaluated factors was detected. Birds exposed to acute heat stress presented significantly higher compared with chronic heat stress. Fixed dietary EB resulted in significantly higher fecal moisture. Lower abdominal fat percentage was obtained in birds exposed to chronic relative to acute heat stress. Higher breast meat L* and b* values were observed in birds exposed to acute heat stress than those submitted to chronic heat stress, indicating worse meat quality.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)UNESP Departamento de Apoio Produção e Saúde Animal DAPSA, Rua Clóvis Pestana, 793 - Bairro: IpanemaUNESP Departamento de Apoio Produção e Saúde Animal DAPSA, Rua Clóvis Pestana, 793 - Bairro: IpanemaFAPESP: 13/09537-7Universidade Estadual Paulista (Unesp)Rodrigues, M. M. [UNESP]Neto, Manoel Garcia [UNESP]Perri, S. H.V. [UNESP]Sandre, D. G. [UNESP]Faria, M. J.A. [UNESP]Oliveira, P. M. [UNESP]Pinto, M. F. [UNESP]Cassiano, R. P. [UNESP]2020-12-12T01:11:53Z2020-12-12T01:11:53Z2019-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/1806-9061-2018-0962Revista Brasileira de Ciencia Avicola, v. 21, n. 3, 2019.1516-635Xhttp://hdl.handle.net/11449/19840310.1590/1806-9061-2018-0962S1516-635X20190003003252-s2.0-85077882706S1516-635X2019000300325.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira de Ciencia Avicolainfo:eu-repo/semantics/openAccess2024-01-18T06:33:45Zoai:repositorio.unesp.br:11449/198403Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:22:39.127546Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
title |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
spellingShingle |
Techniques to minimize the effects of acute heat stress or chronic in broilers Rodrigues, M. M. [UNESP] Animal nutrition Broilers Electrolyte balance Pale muscle syndrome Temperature |
title_short |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
title_full |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
title_fullStr |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
title_full_unstemmed |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
title_sort |
Techniques to minimize the effects of acute heat stress or chronic in broilers |
author |
Rodrigues, M. M. [UNESP] |
author_facet |
Rodrigues, M. M. [UNESP] Neto, Manoel Garcia [UNESP] Perri, S. H.V. [UNESP] Sandre, D. G. [UNESP] Faria, M. J.A. [UNESP] Oliveira, P. M. [UNESP] Pinto, M. F. [UNESP] Cassiano, R. P. [UNESP] |
author_role |
author |
author2 |
Neto, Manoel Garcia [UNESP] Perri, S. H.V. [UNESP] Sandre, D. G. [UNESP] Faria, M. J.A. [UNESP] Oliveira, P. M. [UNESP] Pinto, M. F. [UNESP] Cassiano, R. P. [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 |
Rodrigues, M. M. [UNESP] Neto, Manoel Garcia [UNESP] Perri, S. H.V. [UNESP] Sandre, D. G. [UNESP] Faria, M. J.A. [UNESP] Oliveira, P. M. [UNESP] Pinto, M. F. [UNESP] Cassiano, R. P. [UNESP] |
dc.subject.por.fl_str_mv |
Animal nutrition Broilers Electrolyte balance Pale muscle syndrome Temperature |
topic |
Animal nutrition Broilers Electrolyte balance Pale muscle syndrome Temperature |
description |
High environmental temperature is limiting factor in broiler production. In order to minimize the undesirable consequences of acute or chronic heat stress, the techniques of fixed dietary electrolyte balance and early heat conditioning were evaluated. The objective of this study was to evaluate the possible interactions and effects of dietary electrolyte balance and early heat conditioning on feed intake, body weight, feed conversion ratio, mortality, energy bioeconomic index, fecal moisture, abdominal fat, and breast meat color (L*a*b*) of broilers submitted to chronic or acute heat stress. In total, 1280 chicks, were equally divided in experiment I (chronic heat stress, 6h/day at 32°C from 35 to 39 d of age) and II (acute heat stress, 36 °C for 6h at 38 days of age). The data of both experiments were combined and analyzed according to a 2x2x2 factorial arrangement (early heat conditioning (ETC) or not; fixed dietary electrolyte balance (EB) or not; and exposure to acute or chronic heat stress). ETC consisted of exposing 5-d-old birds to 36.0 °C for 24 hours. No interaction among the evaluated factors was detected. Birds exposed to acute heat stress presented significantly higher compared with chronic heat stress. Fixed dietary EB resulted in significantly higher fecal moisture. Lower abdominal fat percentage was obtained in birds exposed to chronic relative to acute heat stress. Higher breast meat L* and b* values were observed in birds exposed to acute heat stress than those submitted to chronic heat stress, indicating worse meat quality. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 2020-12-12T01:11:53Z 2020-12-12T01:11:53Z |
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/10.1590/1806-9061-2018-0962 Revista Brasileira de Ciencia Avicola, v. 21, n. 3, 2019. 1516-635X http://hdl.handle.net/11449/198403 10.1590/1806-9061-2018-0962 S1516-635X2019000300325 2-s2.0-85077882706 S1516-635X2019000300325.pdf |
url |
http://dx.doi.org/10.1590/1806-9061-2018-0962 http://hdl.handle.net/11449/198403 |
identifier_str_mv |
Revista Brasileira de Ciencia Avicola, v. 21, n. 3, 2019. 1516-635X 10.1590/1806-9061-2018-0962 S1516-635X2019000300325 2-s2.0-85077882706 S1516-635X2019000300325.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira de Ciencia Avicola |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1808129514008477696 |