Using meteorological data to determine the risk of heat stress

A mathematical model of thermodynamic changes in the moist air inside a stable was designed using a computer program called MathCAD. Calculations of air temperature and humidity were carried out in poultry houses with layer hens. They were based on outdoor air characteristics and hens' biologic...

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Veröffentlicht in:Research in Agricultural Engineering (Praha) Jg. 52; H. 2; S. 39 - 47
Hauptverfasser: Sleger, V.(Ceska Zemedelska Univ., Prague (Czech Republic). Technicka Fakulta) E-mail:sleger@tf. czu.cz, Neuberger, P.(Ceska Zemedelska Univ., Prague (Czech Republic). Technicka Fakulta)
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Prague Czech Academy of Agricultural Sciences (CAAS) 01.06.2006
Czech Academy of Agricultural Sciences
Schlagworte:
ACONDICIONAMIENTO DE AIRE
air
AIR CONDITIONING
Air cooling
air humidity
AIR TEMPERATURE
ALOJAMIENTO PARA AVES
Animal production
Animals
biological production
Climatic conditions
CLIMATISATION
Computation
CONTROL AMBIENTAL
CONTROLE DU MILIEU
COOLING
Cooling systems
DESEMPENO EN LA POSTURA
Egg laying
eggs
ENFRIAMIENTO
ENVIRONMENTAL CONTROL
ESTRES TERMICO
EVAPORACION
EVAPORATION
evaporation cooling
Evaporative cooling
GALLINA PONEDORA
GALLINAS
Graphs
HEAT STRESS
Heat tolerance
HENS
HUMEDAD RELATIVA
HUMIDITE RELATIVE
humidity
LAYER CHICKENS
laying hens
LAYING PERFORMANCE
LOGEMENT DES VOLAILLES
MATHEMATICAL MODELS
Meteorological data
MODELE MATHEMATIQUE
MODELOS MATEMATICOS
PERFORMANCE DE PONTE
POULE PONDEUSE
POULETTE
POULTRY HOUSING
REFROIDISSEMENT
RELATIVE HUMIDITY
risk
STRESS THERMIQUE
TEMPERATURA DEL AIRE
TEMPERATURE DE L'AIR
temperature-humidity index
VENTILACION
VENTILATION
ISSN:1212-9151, 1805-9376
Online-Zugang:Volltext
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Beschreibung
Zusammenfassung:A mathematical model of thermodynamic changes in the moist air inside a stable was designed using a computer program called MathCAD. Calculations of air temperature and humidity were carried out in poultry houses with layer hens. They were based on outdoor air characteristics and hens' biological production. Meteorological data were monitored hourly from May to August during the years 2000 to 2002. The calculated values were used to assess the potential of evaporation cooling in mild climatic conditions. The model may also be used to calculate the time the animals spend at a certain temperature before it is lowered by cooling. For example, in June 2002, the time the animals were exposed to 27 deg C was reduced from 39 to 22 h, and in July, it was from 33 to 4 h.
Bibliographie:2006000555
L74
N10
http://www.cazv.cz/UserFiles/File/ZT%2052_39-47.pdf
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ISSN:1212-9151
1805-9376
DOI:10.17221/4878-RAE