Impact of environmental conditions during summer in the southern hemisphere on horses kept stabled or grazing
Published 2026-02-18
Keywords
- Estresse térmico, sazonalidade, termorregulação, bem-estar, clima tropical.
How to Cite
Copyright (c) 2026 Carolina Jones Ferreira Lima da Silva, Keity Laiane Gomes Trindade, Juliette Gonçalves da Silva, Raissa Karolliny Salgueiro Cruz, Catharina Albuquerque Vieira, Carla Rayane Santos, Helena Emília Cavalcanti da Costa Cordeiro Manso, Hélio Cordeiro Manso Filho

This work is licensed under a Creative Commons Attribution 4.0 International License.
Abstract
Thermography is a versatile, non-invasive, and important tool for identifying physiological changes, even before the presentation of clinical signs. It is also valuable in assessing thermoregulation, allowing the study of how factors such as ambient temperature and relative air humidity affect body temperature. The hypothesis that the thermographic evaluation of the caruncle temperature provides data capable of predicting the influence of environmental conditions on the body temperature of equines was proposed. The objective was to evaluate the body temperature of equines under maintenance, housed in stalls or paddocks, and to associate it with ambient temperature and relative air humidity. The experiment was conducted at NPE/UFRPE, using Purebred Arabian mares. The evaluations were performed using infrared thermography (IRT) during the period from November to March, with the animals kept in Stalls or Pasture, at 9:00 AM, 11:00 AM, and 3:00 PM. Internal temperature (°C) was obtained in the region of the eye caruncle, and ambient temperature (°C) and relative air humidity (%) were measured using a thermo-hygrometer. The data were subjected to ANOVA with Tukey's test and p<0.05. The evaluation of environmental conditions was consistent with what was expected for the region. The animals showed temperature variation dependent on the time of day, but not on the month or housing location, which was unexpected. From these results, it is possible to conclude that the animals demonstrated adaptation to the environmental conditions of the region regardless of the housing location.
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