The effect of ambient temperature on infrared thermographic images of joints in the distal forelimbs of healthy racehorses |
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| Institution: | 1. Department of Horse Breeding and Equestrian Studies, Institute of Animal Breeding, Wrocław University of Environmental and Life Sciences, Kozuchowska 5A, 51-161 Wrocław, Poland;2. Microvascular Diagnostics, Institute of Immunity and Transplantation, Royal Free Hospital, Pond Street, London NW3 2QG, UK;3. Faculty of Mechanical Engineering, Wrocław University of Technology, Lukasiewicza 7/9, 50-231 Wrocław, Poland;1. UMR 1198, INRA, Biologie du Développement et Reproduction, Jouy en Josas, France;2. Clinique Equine, Faculté de Médecine Vétérinaire, CORD, Université de Liège, Liège, Belgium;3. IFCE, Station Expérimentale de la Valade, Chamberet, France;4. INRA, UE 1293, Nouzilly, France;5. Normandie Université, UNICAEN, SF4206 ICORE / LABEO Frank Duncombe Laboratory, Caen, France;1. Department of Veterinary Sciences, University of Messina, Polo Universitario dell’Annunziata, Messina, Italy;2. Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy;3. Veterinary Practitioner, Bologna, Italy;1. School of Life Sciences, University of KwaZulu-Natal, P/Bag X01, Scottsville, Pietermaritzburg 3209, South Africa;2. The Endangered Wildlife Trust, P/Bag X11, Modderfontein, Johannesburg 1645, South Africa;3. Department of Veterinary Tropical Diseases, University of Pretoria, P/Bag X04, Onderstepoort, Pretoria 0110, South Africa |
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| Abstract: | The aim of the study was to describe the dependence on ambient temperature of distal joint temperature at the forelimbs of racehorses. The study also investigated the influence of differing ambient temperatures on the temperature difference between joints: this was measured ipsilaterally (i.e. between the carpal and fetlock joints along each forelimb) and contralaterally (i.e. between the same joints of the left and right forelimbs). Sixty-four healthy racehorses were monitored over 10 months. At each session, three thermographic images were taken of the dorsal, lateral and medial aspects of the distal forelimbs. Temperature measurements were made from regions of interest (ROIs) covering the carpal and fetlock joints. There was a strong correlation between ambient temperature and absolute joint temperature at all ROIs. The study also observed a moderate correlation between ambient temperature and the ipsilateral temperature differences between joints when measured from the medial and lateral aspects. No significant correlation was noted when measured dorsally. The mean contralateral temperature differences between joints were all close to 0 °C. The data support previous reports that the temperature distribution between the forelimbs of the healthy equine is generally symmetric, although some horses differ markedly from the average findings. |
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| Keywords: | Infrared thermography Equine ambient temperature surface temperature |
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