Spatial variability of air temperature in a free-stall in the Northeastern semi-arid region of Brazil/Variabilidade espacial da temperatura do ar de um free-stall na regiao semiarida nordestina do Brasil
The knowledge on the spatial variability of climatic attributes and the building of Kriging maps can assist in the design and management of confined animal facilities, by allowing a spatial visualization that is helpful for the planning and control of information from the production environment. The...
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Veröffentlicht in: | Revista brasileira de engenharia agrícola e ambiental 2016-01, p.67 |
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Format: | Artikel |
Sprache: | spa |
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Zusammenfassung: | The knowledge on the spatial variability of climatic attributes and the building of Kriging maps can assist in the design and management of confined animal facilities, by allowing a spatial visualization that is helpful for the planning and control of information from the production environment. The study aimed to characterize the spatial variability of air temperature in a free-stall barn used for dairy cattle confinement located in Petrolina-PE, Brazil, in different seasons and at different times. The variable air temperature was recorded at 136 points distributed in the areas under the shed and the shade cloth for the study of spatial variability and the construction of maps by Kriging. Air temperature data was collected in the winter and in the summer, in the months of July and August (2013) and January and February (2014), at different times (9 and 15 h). According to the results, the use of geostatistics enabled to define areas with different spatial variabilities in air temperature and specific areas in the free-stall with values higher than the recommended levels for thermal comfort. In addition, the central part of the facility is the region with the lowest values of air temperatures, due to the presence of a ridge vent. Key words: dairy cattle thermal comfort geostatistics animal production systems precision animal production O conhecimento da variabilidade espacial de atributos climaticos e a construcao de mapas de krigagem podem auxiliar no projeto e no manejo de instalacoes para animais confinados, ao permitir uma visao espacial util ao planejamento e ao controle das informacoes do ambiente de producao. O trabalho teve, como objetivo principal, caracterizar a variabilidade espacial da temperatura do ar de um galpao free-stall utilizado para confinamento de bovinos leiteiros, localizado na cidade de Petrolina, PE, em diferentes estacoes e horarios. A variavel temperatura do ar foi registrada em 136 pontos distribuidos na area do galpao e sombrite, para o estudo da variabilidade espacial e a construcao de mapas por krigagem. As coletas dos dados de temperatura do ar foram realizadas nas estacoes de inverno e verao, nos meses de julho e agosto (2013), janeiro e fevereiro (2014) em diferentes horarios (9 e 15 h). Por meio dos resultados obtidos foi possivel definir areas com diferentes variabilidades espaciais para temperatura do ar e areas especificas no free-stall que apresentaram valores acima do recomendado para o conforto termico animal. Noto |
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ISSN: | 1415-4366 |
DOI: | 10.1590/1807-1929/agriambi.v20n1p67-71 |