Spatial variation of enthalpy in a commercial broiler house in a hot climate region
Main Author: | |
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Publication Date: | 2015 |
Other Authors: | , , , , , , |
Format: | Article |
Language: | eng |
Source: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Download full: | http://hdl.handle.net/10174/17506 |
Summary: | Analysis of the spatial variation of the thermal comfort indexes inside a livestock installation is an important tool for management and handling of the animal production system in the environment. It facilitates decision-making, and helps to plan possible changes in the facility with the aim of increasing animal welfare. When the facilities are located in regions with warm weather and a small temperature amplitude, Brazilian broiler producers usually opt for installations without thermal insulation on the sides so that hybrid negative pressure ventilation can be used. However, the question of spatial temperature variation, thermal comfort indexes and maps of enthalpy inside uninsulated broilers houses remains unanswered for some parts of Brazil. The objective of this work was to analyse the spatial variation of enthalpy as a comfort index in a typical uninsulated commercial broiler house in a hot climate region, Mato Grosso State, in the mid-west of Brazil. Temperature, humidity and luminosity were measured and the enthalpy was calculated for the experimental period. It was observed that the enthalpy index was outside the thermal comfort zone for broilers during the experimental period, with average values ranging from 71.89 to 79.84 kJ.kg-1 of dry air. The maps of enthalpy variation inside the broiler house showed that the highest enthalpy values were predominantly on the left side of the building, which can be correlated with solar radiation which was most intense in this area during the experimental period. |
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Spatial variation of enthalpy in a commercial broiler house in a hot climate regionanimal welfarespatial variationpoultry housingAnalysis of the spatial variation of the thermal comfort indexes inside a livestock installation is an important tool for management and handling of the animal production system in the environment. It facilitates decision-making, and helps to plan possible changes in the facility with the aim of increasing animal welfare. When the facilities are located in regions with warm weather and a small temperature amplitude, Brazilian broiler producers usually opt for installations without thermal insulation on the sides so that hybrid negative pressure ventilation can be used. However, the question of spatial temperature variation, thermal comfort indexes and maps of enthalpy inside uninsulated broilers houses remains unanswered for some parts of Brazil. The objective of this work was to analyse the spatial variation of enthalpy as a comfort index in a typical uninsulated commercial broiler house in a hot climate region, Mato Grosso State, in the mid-west of Brazil. Temperature, humidity and luminosity were measured and the enthalpy was calculated for the experimental period. It was observed that the enthalpy index was outside the thermal comfort zone for broilers during the experimental period, with average values ranging from 71.89 to 79.84 kJ.kg-1 of dry air. The maps of enthalpy variation inside the broiler house showed that the highest enthalpy values were predominantly on the left side of the building, which can be correlated with solar radiation which was most intense in this area during the experimental period.Precision Livestock Farming 20152016-02-22T16:11:06Z2016-02-222015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/17506http://hdl.handle.net/10174/17506engVilela M.O., Oliveira J.L., Teles Junior C.G.S., Tinôco I.F., Baptista F.J., Barbari M., Santos T.C. and Souza C.F. 2015. Spatial variation of the enthalpy in a commercial broilers housing in a hot climate region. Proc. Precision Livestock Farming 2015, ECPLF 2015: 531-537Partilhar com ICAAMndndndndfb@uevora.ptndndnd580Vilela, M.O.Oliveira, J.L.Teles Junior, C.G.Tinôco, I.F.Baptista, F.J.Barbari, M.Santos, T.C.Souza, C.F.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:04:41Zoai:dspace.uevora.pt:10174/17506Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:09:29.069446Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
title |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
spellingShingle |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region Vilela, M.O. animal welfare spatial variation poultry housing |
title_short |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
title_full |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
title_fullStr |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
title_full_unstemmed |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
title_sort |
Spatial variation of enthalpy in a commercial broiler house in a hot climate region |
author |
Vilela, M.O. |
author_facet |
Vilela, M.O. Oliveira, J.L. Teles Junior, C.G. Tinôco, I.F. Baptista, F.J. Barbari, M. Santos, T.C. Souza, C.F. |
author_role |
author |
author2 |
Oliveira, J.L. Teles Junior, C.G. Tinôco, I.F. Baptista, F.J. Barbari, M. Santos, T.C. Souza, C.F. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Vilela, M.O. Oliveira, J.L. Teles Junior, C.G. Tinôco, I.F. Baptista, F.J. Barbari, M. Santos, T.C. Souza, C.F. |
dc.subject.por.fl_str_mv |
animal welfare spatial variation poultry housing |
topic |
animal welfare spatial variation poultry housing |
description |
Analysis of the spatial variation of the thermal comfort indexes inside a livestock installation is an important tool for management and handling of the animal production system in the environment. It facilitates decision-making, and helps to plan possible changes in the facility with the aim of increasing animal welfare. When the facilities are located in regions with warm weather and a small temperature amplitude, Brazilian broiler producers usually opt for installations without thermal insulation on the sides so that hybrid negative pressure ventilation can be used. However, the question of spatial temperature variation, thermal comfort indexes and maps of enthalpy inside uninsulated broilers houses remains unanswered for some parts of Brazil. The objective of this work was to analyse the spatial variation of enthalpy as a comfort index in a typical uninsulated commercial broiler house in a hot climate region, Mato Grosso State, in the mid-west of Brazil. Temperature, humidity and luminosity were measured and the enthalpy was calculated for the experimental period. It was observed that the enthalpy index was outside the thermal comfort zone for broilers during the experimental period, with average values ranging from 71.89 to 79.84 kJ.kg-1 of dry air. The maps of enthalpy variation inside the broiler house showed that the highest enthalpy values were predominantly on the left side of the building, which can be correlated with solar radiation which was most intense in this area during the experimental period. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-01-01T00:00:00Z 2016-02-22T16:11:06Z 2016-02-22 |
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://hdl.handle.net/10174/17506 http://hdl.handle.net/10174/17506 |
url |
http://hdl.handle.net/10174/17506 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Vilela M.O., Oliveira J.L., Teles Junior C.G.S., Tinôco I.F., Baptista F.J., Barbari M., Santos T.C. and Souza C.F. 2015. Spatial variation of the enthalpy in a commercial broilers housing in a hot climate region. Proc. Precision Livestock Farming 2015, ECPLF 2015: 531-537 Partilhar com ICAAM nd nd nd nd fb@uevora.pt nd nd nd 580 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Precision Livestock Farming 2015 |
publisher.none.fl_str_mv |
Precision Livestock Farming 2015 |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136577223393280 |