Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress

Detalhes bibliográficos
Autor(a) principal: de Oliveira, Marllon José Karpeggiane [UNESP]
Data de Publicação: 2023
Outros Autores: Valk, Marcio, Melo, Antônio Diego Brandão [UNESP], Marçal, Danilo Alves [UNESP], Silva, Cleslei Alisson [UNESP], Valini, Graziela Alves da Cunha [UNESP], Arnaut, Pedro Righetti [UNESP], Gonçalves, Joseane Penteado Rosa [UNESP], Andretta, Ines, Hauschild, Luciano [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.3390/ani13050908
http://hdl.handle.net/11449/249750
Resumo: The impact of cyclic heat stress (CHS) and turning the lights on and off on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real-time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22/35 °C). The day was divided into four periods: PI (06–08 h); PII (08–18 h); PIII (18–20 h); and PIV (20–06 h). Automatic and Intelligent Precision Feeders recorded each feed event for each pig. An estimated meal criterion (49 min) was used to calculate the FB variables. Feed behavior in both ATs followed a circadian pattern. The CHS reduced the feed intake by 6.9%. The pigs prioritized feed intake during the coolest hours of the day; however, nocturnal cooling did not allow the pigs to compensate for the reduced meal size due to CHS. The highest meal size and most of the meals were observed during the lighting-on period. The pigs reduced their interval between meals during PII and PIII. The lighting program increased the meal size when the lights were switched on and reduced the meal size when the lights were switched off. Thus, the dynamics of the FB were largely influenced by AT, whereas the meal size was affected by the lighting program.
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spelling Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stresscircadian rhythmfeed patternlight programmeal patternprecision feedingswineThe impact of cyclic heat stress (CHS) and turning the lights on and off on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real-time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22/35 °C). The day was divided into four periods: PI (06–08 h); PII (08–18 h); PIII (18–20 h); and PIV (20–06 h). Automatic and Intelligent Precision Feeders recorded each feed event for each pig. An estimated meal criterion (49 min) was used to calculate the FB variables. Feed behavior in both ATs followed a circadian pattern. The CHS reduced the feed intake by 6.9%. The pigs prioritized feed intake during the coolest hours of the day; however, nocturnal cooling did not allow the pigs to compensate for the reduced meal size due to CHS. The highest meal size and most of the meals were observed during the lighting-on period. The pigs reduced their interval between meals during PII and PIII. The lighting program increased the meal size when the lights were switched on and reduced the meal size when the lights were switched off. Thus, the dynamics of the FB were largely influenced by AT, whereas the meal size was affected by the lighting program.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Department of Animal Science School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp), São PauloDepartment of Statistics Universidade Federal do Rio Grande do Sul, Rio Grande do SulDepartment of Animal Science Universidade Federal do Rio Grande do Sul, Rio Grande do SulDepartment of Animal Science School of Agricultural and Veterinarian Sciences São Paulo State University (Unesp), São PauloCNPq: 142555/2019-3Universidade Estadual Paulista (UNESP)Universidade Federal do Rio Grande do Sulde Oliveira, Marllon José Karpeggiane [UNESP]Valk, MarcioMelo, Antônio Diego Brandão [UNESP]Marçal, Danilo Alves [UNESP]Silva, Cleslei Alisson [UNESP]Valini, Graziela Alves da Cunha [UNESP]Arnaut, Pedro Righetti [UNESP]Gonçalves, Joseane Penteado Rosa [UNESP]Andretta, InesHauschild, Luciano [UNESP]2023-07-29T16:08:14Z2023-07-29T16:08:14Z2023-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/ani13050908Animals, v. 13, n. 5, 2023.2076-2615http://hdl.handle.net/11449/24975010.3390/ani130509082-s2.0-85149721988Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengAnimalsinfo:eu-repo/semantics/openAccess2024-06-07T18:43:48Zoai:repositorio.unesp.br:11449/249750Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:11:49.812807Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
title Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
spellingShingle Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
de Oliveira, Marllon José Karpeggiane [UNESP]
circadian rhythm
feed pattern
light program
meal pattern
precision feeding
swine
title_short Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
title_full Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
title_fullStr Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
title_full_unstemmed Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
title_sort Feeding Behavior of Finishing Pigs under Diurnal Cyclic Heat Stress
author de Oliveira, Marllon José Karpeggiane [UNESP]
author_facet de Oliveira, Marllon José Karpeggiane [UNESP]
Valk, Marcio
Melo, Antônio Diego Brandão [UNESP]
Marçal, Danilo Alves [UNESP]
Silva, Cleslei Alisson [UNESP]
Valini, Graziela Alves da Cunha [UNESP]
Arnaut, Pedro Righetti [UNESP]
Gonçalves, Joseane Penteado Rosa [UNESP]
Andretta, Ines
Hauschild, Luciano [UNESP]
author_role author
author2 Valk, Marcio
Melo, Antônio Diego Brandão [UNESP]
Marçal, Danilo Alves [UNESP]
Silva, Cleslei Alisson [UNESP]
Valini, Graziela Alves da Cunha [UNESP]
Arnaut, Pedro Righetti [UNESP]
Gonçalves, Joseane Penteado Rosa [UNESP]
Andretta, Ines
Hauschild, Luciano [UNESP]
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (UNESP)
Universidade Federal do Rio Grande do Sul
dc.contributor.author.fl_str_mv de Oliveira, Marllon José Karpeggiane [UNESP]
Valk, Marcio
Melo, Antônio Diego Brandão [UNESP]
Marçal, Danilo Alves [UNESP]
Silva, Cleslei Alisson [UNESP]
Valini, Graziela Alves da Cunha [UNESP]
Arnaut, Pedro Righetti [UNESP]
Gonçalves, Joseane Penteado Rosa [UNESP]
Andretta, Ines
Hauschild, Luciano [UNESP]
dc.subject.por.fl_str_mv circadian rhythm
feed pattern
light program
meal pattern
precision feeding
swine
topic circadian rhythm
feed pattern
light program
meal pattern
precision feeding
swine
description The impact of cyclic heat stress (CHS) and turning the lights on and off on pig feeding behavior (FB) was investigated. The FB of 90 gilts was recorded in real-time under two ambient temperatures (AT): thermoneutrality (TN, 22 °C) or CHS (22/35 °C). The day was divided into four periods: PI (06–08 h); PII (08–18 h); PIII (18–20 h); and PIV (20–06 h). Automatic and Intelligent Precision Feeders recorded each feed event for each pig. An estimated meal criterion (49 min) was used to calculate the FB variables. Feed behavior in both ATs followed a circadian pattern. The CHS reduced the feed intake by 6.9%. The pigs prioritized feed intake during the coolest hours of the day; however, nocturnal cooling did not allow the pigs to compensate for the reduced meal size due to CHS. The highest meal size and most of the meals were observed during the lighting-on period. The pigs reduced their interval between meals during PII and PIII. The lighting program increased the meal size when the lights were switched on and reduced the meal size when the lights were switched off. Thus, the dynamics of the FB were largely influenced by AT, whereas the meal size was affected by the lighting program.
publishDate 2023
dc.date.none.fl_str_mv 2023-07-29T16:08:14Z
2023-07-29T16:08:14Z
2023-03-01
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/10.3390/ani13050908
Animals, v. 13, n. 5, 2023.
2076-2615
http://hdl.handle.net/11449/249750
10.3390/ani13050908
2-s2.0-85149721988
url http://dx.doi.org/10.3390/ani13050908
http://hdl.handle.net/11449/249750
identifier_str_mv Animals, v. 13, n. 5, 2023.
2076-2615
10.3390/ani13050908
2-s2.0-85149721988
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Animals
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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_ 1808129297009868800