Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase
The air dry-bulb temperature (t db),as well as the black globe humidity index (BGHI), exert great influence on the development of broiler chickens during their heating phase. Therefore, the aim of this study was to analyze the structure and the magnitude of the t db and BGHI spatial variability, usi...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Engenharia Agrícola
2013-06-01
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| Series: | Engenharia Agrícola |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000300001&tlng=en |
| _version_ | 1819005411766829056 |
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| author | Patrícia F. Ponciano Tadayuki Yanagi Junior Gabriel A. E S. Ferraz João D. Scalon Leonardo Schiassi |
| author_facet | Patrícia F. Ponciano Tadayuki Yanagi Junior Gabriel A. E S. Ferraz João D. Scalon Leonardo Schiassi |
| author_sort | Patrícia F. Ponciano |
| collection | DOAJ |
| description | The air dry-bulb temperature (t db),as well as the black globe humidity index (BGHI), exert great influence on the development of broiler chickens during their heating phase. Therefore, the aim of this study was to analyze the structure and the magnitude of the t db and BGHI spatial variability, using geostatistics tools such as semivariogram analysis and also producing kriging maps. The experiment was conducted in the west mesoregion of the states of Minas Gerais in 2010, in a commercial broiler house with heating system consisting of two furnaces that heat the air indirectly, in the firsts 14 days of the birds' life. The data were registered at intervals of five minutes in the period from 8 a.m. to 10 a.m. The variables were evaluated by variograms fitted by residual maximum likelihood (REML) testing the Spherical and Exponential models. Kriging maps were generated based on the best model used to fit the variogram. It was possible to characterize the variability of the t db and BGHI, which allowed observing the spatial dependence by using geostatistics techniques. In addition, the use of geostatistics and distribution maps made possible to identify problems in the heating system in regions inside the broiler house that may harm the development of chicks. |
| first_indexed | 2024-12-20T23:52:22Z |
| format | Article |
| id | doaj.art-ca8639025823483aba2cd53ae4503bbf |
| institution | Directory Open Access Journal |
| issn | 0100-6916 |
| language | English |
| last_indexed | 2024-12-20T23:52:22Z |
| publishDate | 2013-06-01 |
| publisher | Sociedade Brasileira de Engenharia Agrícola |
| record_format | Article |
| series | Engenharia Agrícola |
| spelling | doaj.art-ca8639025823483aba2cd53ae4503bbf2022-12-21T19:22:49ZengSociedade Brasileira de Engenharia AgrícolaEngenharia Agrícola0100-69162013-06-0133343344410.1590/S0100-69162013000300001Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phasePatrícia F. Ponciano0Tadayuki Yanagi Junior1Gabriel A. E S. Ferraz2João D. Scalon3Leonardo Schiassi4Universidade Federal de LavrasUniversidade Federal de LavrasUniversidade Federal Rural do Rio de JaneiroUniversidade Federal de LavrasUniversidade Federal de Mato GrossoThe air dry-bulb temperature (t db),as well as the black globe humidity index (BGHI), exert great influence on the development of broiler chickens during their heating phase. Therefore, the aim of this study was to analyze the structure and the magnitude of the t db and BGHI spatial variability, using geostatistics tools such as semivariogram analysis and also producing kriging maps. The experiment was conducted in the west mesoregion of the states of Minas Gerais in 2010, in a commercial broiler house with heating system consisting of two furnaces that heat the air indirectly, in the firsts 14 days of the birds' life. The data were registered at intervals of five minutes in the period from 8 a.m. to 10 a.m. The variables were evaluated by variograms fitted by residual maximum likelihood (REML) testing the Spherical and Exponential models. Kriging maps were generated based on the best model used to fit the variogram. It was possible to characterize the variability of the t db and BGHI, which allowed observing the spatial dependence by using geostatistics techniques. In addition, the use of geostatistics and distribution maps made possible to identify problems in the heating system in regions inside the broiler house that may harm the development of chicks.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000300001&tlng=enbroiler chickenskrigingchicksemivariogramthermal stress |
| spellingShingle | Patrícia F. Ponciano Tadayuki Yanagi Junior Gabriel A. E S. Ferraz João D. Scalon Leonardo Schiassi Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase Engenharia Agrícola broiler chickens kriging chick semivariogram thermal stress |
| title | Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase |
| title_full | Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase |
| title_fullStr | Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase |
| title_full_unstemmed | Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase |
| title_short | Spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase |
| title_sort | spatial variability of air dry bulb temperature and black globe humidity index in a broiler house during the heating phase |
| topic | broiler chickens kriging chick semivariogram thermal stress |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000300001&tlng=en |
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