| Registro completo |
| Provedor de dados: |
REA
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| País: |
Brazil
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| Título: |
CLOACAL AND SURFACE TEMPERATURES OF BROILERS SUBJECT TO THERMAL STRESS
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| Autores: |
Abreu,Lucas H. P.
Yanagi Junior,Tadayuki
Campos,Alessandro T.
Bahuti,Marcelo
Fassani,Édison J.
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| Data: |
2017-09-01
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| Ano: |
2017
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| Palavras-chave: |
Animal environment
Aviculture
Thermal comfort
Thermographic image
Physiologic parameters
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| Resumo: |
ABSTRACT: The cloacal and surface temperatures are important physiological parameters to quantify the thermal comfort of animals, its variations may occur as a function of thermal variables. In this context, the goal of the present study was to evaluate the cloacal (tclo) and surface (tsur) temperatures of Cobb 500® broilers, in the second week of life, subjected to different air dry-bulb temperature (24, 27, 30 and 33 °C) and stress durations (1, 2, 3 and 4 days). The experiment was carried out in four climate-controlled wind tunnels. Air relative humidity and air velocity were set at 60% and 0.2 m s-1, respectively. The tclo and tsur were measured daily through digital thermometer and thermographic camera, respectively. Analysis of variance and Scott Knott mean test at 5% probability were applied to the data. The results indicate that the stress by low air temperature (24 and 27 °C) resulted decreased of tclo and tsur (p<0.05, Scott-Knott test). When subjected to high air temperature stress (33 °C), there was no significant difference (p>0.05, Scott-Knott test) compared to the control treatment (30 °C). Acclimation of broilers to thermal stress occurred from the second day of stress.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500877
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| Editor: |
Associação Brasileira de Engenharia Agrícola
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| Relação: |
10.1590/1809-4430-eng.agric.v37n5p877-886/2017
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| Formato: |
text/html
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| Fonte: |
Engenharia Agrícola v.37 n.5 2017
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| Direitos: |
info:eu-repo/semantics/openAccess
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