A correct enthalpy relationship as thermal comfort index for livestock

Rodrigues, Valéria Cristina; da Silva, Iran José Oliveira; Vieira, Frederico Márcio Corrêa; Nascimento, Sheila Tavares

doi:10.1007/s00484-010-0344-y

Cited by 135Effects of Environmental Stressors on LivestockBuilding Energy and Comfort OptimizationThermoregulation and physiological responses

A correct enthalpy relationship as thermal comfort index for livestock

Rodrigues, Valéria Cristina, da Silva, Iran José Oliveira, Vieira, Frederico Márcio Corrêa, Nascimento, Sheila Tavares·2011·International Journal of Biometeorology

DOI 10.1007/s00484-010-0344-y

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Abstract

Researchers working with thermal comfort have been using enthalpy to measure thermal energy inside rural facilities, establishing indicator values for many situations of thermal comfort and heat stress. This variable turned out to be helpful in analyzing thermal exchange in livestock systems. The animals are exposed to an environment which is decisive for the thermoregulatory process, and, consequently, the reactions reflect states of thermal comfort or heat stress, the last being responsable for problems of sanity, behavior and productivity. There are researchers using enthalpy as a qualitative indicator of thermal environment of livestock such as poultry, cattle and hogs in tropical regions. This preliminary work intends to check different enthalpy equations using information from classical thermodynamics, and proposes a direct equation as thermal comfort index for livestock systems.

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The larger the correlation coefficient, the better the prediction of the thermal index.
“The larger the correlation coefficient, the better the prediction of the thermal index [21].”
From Modeling of Heat Stress in Sows—Part 1: Establishment of the Prediction Model for the Equivalent Temperature Index of the Sows (2021) · cites this paper as [21]

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Authors: Rodrigues, V. C., da Silva, I. J. O., Vieira, F. M. C., & Nascimento, S. T.
Affiliations: Universidade de São Paulo (BR)
Corresponding author: Rodrigues, Valéria Cristina
ORCID: Vieira, Frederico Márcio Corrêa
Nascimento, Sheila Tavares
Venue: International Journal of Biometeorology
Publisher: Springer Science and Business Media LLC
Published: 2010-07-07
Volume: 55
Issue: 3
Pages: 455-459
ISSN: 0020-7128 (ISSN-L)
1432-1254
DOI: 10.1007/s00484-010-0344-y
OpenAlex: W1989622105
Cited by: 135
References: 13
Citations by year: 2026: 6 · 2025: 13 · 2024: 7 · 2023: 10 · 2022: 12 · 2021: 12 · 2020: 13 · 2019: 9 · 2018: 6 · 2017: 10 · 2016: 9 · 2015: 9 · 2014: 5 · 2013: 3 · 2012: 6
FWCI: 7.50
Type: journal article
Language: en
Open access: closed
Licence: www.springer.com/tdm (tdm)
Locations: International Journal of Biometeorology (publishedVersion)
PubMed (publishedVersion)
Scientific Electronic Library Online (São Paulo Research Foundation, Latin American and Caribbean Center on Health Sciences Information, Conselho Nacional de Desenvolvimento Científico e Tecnológico) (publishedVersion)
Topics: Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Effects of Environmental Stressors on Livestock
Physical Sciences › Engineering › Building and Construction › Building Energy and Comfort Optimization
Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
Keywords: enthalpy, thermal comfort index, livestock, heat stress, thermoregulation, thermal environment, poultry, cattle, pigs
MeSH terms: Animals, Body Temperature Regulation, Cattle, Hot Temperature, Poultry, Stress, Physiological, Swine, Thermosensing, Thermodynamics, Livestock

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A correct enthalpy relationship as thermal comfort index for livestock

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