Heat tolerance in Pantaneiro horses subjected to different exercise regimes

Authors

  • Sandra Aparecida Santos Embrapa Pantanal, Rua 21 de Setembro, n.º 1.880, Nossa Senhora de Fátima, CEP 79320-900 Corumbá, MS.
  • Gianni Aguiar da Silva Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Medicina Veterinária e Zootecnia, Departamento de Fisiologia, Rua Prof. Doutor Walter Mauricio Correa, s/n.º, CEP 18618-681 Botucatu, SP.
  • Adalgiza Souza Carneiro de Rezende Universidade Federal de Minas Gerais, Escola de Veterinária, Departamento de Zootecnia, Avenida Antônio Carlos, n.º 6.627, Campus Pampulha, CEP 31270-901 Belo Horizonte, MG.
  • Danielle Assis de Faria Universidade de Brasília, Instituto Central de Ciências, Faculdade de Agronomia e Medicina Veterinária, Campus Darcy Ribeiro, Asa Norte, CEP 70910-900 Brasília, DF.
  • Balbina Maria Soriano Embrapa Pantanal, Rua 21 de Setembro, n.º 1.880, Nossa Senhora de Fátima, CEP 79320-900 Corumbá, MS.
  • Concepta McManus Universidade de Brasília, Instituto de Ciências Biológicas, Departamento de Ciências Bisiológicas, Campus Darcy Ribeiro, Asa Norte, CEP 70910-900, Brasília, DF, Brazil.

Keywords:

Equus ferus caballus, animal welfare, body temperature, gait, lactate, thermal balance, thermal stress

Abstract

The objective of this work was to determine how different types of gait affect the physiological and thermographic responses of Pantaneiro horses (Equus ferus caballus) subjected to field conditions under high environmental temperatures. Ten horses were evaluated in a double 5x5 Latin square experimental design, with five gait types: walk, trot, extended trot, gallop, and extended gallop. The following physiological measures were determined immediately after exercise: heart and respiratory rates, blood lactate content, and rectal temperature. Body surface temperatures were evaluated using an infrared camera. The walk, trot, and extended trot were the most adequate gaits for Pantaneiro horses to maintain thermoregulation within the physiological norms under conditions with a high air temperature. The temperatures obtained in the eye and elbow regions show the best predictive capacity for physiological parameters.

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Published

2022-12-05

How to Cite

Santos, S. A., Silva, G. A. da, Rezende, A. S. C. de, Faria, D. A. de, Soriano, B. M., & McManus, C. (2022). Heat tolerance in Pantaneiro horses subjected to different exercise regimes. Pesquisa Agropecuaria Brasileira, 57(Z), e02955. Retrieved from https://apct.sede.embrapa.br/pab/article/view/27170

Issue

V.57, Jan./Dec., 2022 :Continuos publication

Section

VETERINARY SCIENCE