Abstract
The aim of the study was to determine the utility of maximum eye temperature measured by infrared thermography (IRT) as a stress indicator compared with plasma cortisol concentration in Thoroughbred and Arabian racehorses. The study included thirty racehorses undergoing standard training for racing. Measurements of maximum eye temperature and blood collection for plasma cortisol concentration were carried out before training (BT), and within 5 (5AT) and 120 minutes (120AT) after the end of the each training session in three repetitions, with a monthly interval. Both parameters were elevated at 5AT compared to BT (p<0.001). Compared to BT, at 120AT the maximum eye temperature remained elevated (p<0.001) and plasma cortisol concentration decreased (p<0.001). The study indicated significant weak correlations (r=0.220; p<0.001) between both measurements at all time points. The results support the use of IRT technique to monitor the response of horses to stress, potentially improving animal management and welfare.
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Bibliography
Becker-Birck M, Schmidt A, Lasarzik J, Aurich J, Mostl E, Aurich C (2013) Cortisol release and heart rate variability in sport horses partici-pating in equestrian competitions. J Vet Behav 8: 87-94.
Cayado P, Munoz-Escassi B, Dominguez C, Manley W, Olabarri B, Sanchez de la Muela M, Castejon F, Maranon G, Vara E (2006) Hor-mone response to training and competition in athletic horses. Equine Vet J Suppl 36: 274-78.
Christensen JW, Beekmans M, van Dalumb M, Van Dierendonck M (2014) Effects of hyperflexion on acute stress responses in ridden dres-sage horses. Physiol Behav 128: 39-45.
Cook N, Schaefer A, Warren L, Burwash L, Anderson M, Baron V (2001) Adrenocortical and metabolic responses to ACTH injection in horses: an assessment by salivary cortisol and infrared thermography of the eye. Can J Anim Sci 81: 621.
Fazio E, Calabrò G, Medica P, Messineo C, Ferlazzo A (2006) Serum cortisol levels of quarter horses: circadian variations and effects of training and western riding events. In: Lindner A (ed) Management of Lameness Causes in Sport Horses. Wageningen Academic Publishers, 2006, Cambridge, pp 175-179.
Fazio E, Medica P, Cravana C, Ferlazzo A (2008) Effects of competition experience and transportation on the adrenocortical and thyroid re-sponses of horses. Vet Rec 163: 713-716.
Irvine CH, Alexander SL (1994) Factors affecting the circadian rhythm in plasma cortisol concentrations in the horse. Domest Anim Endocrinol 11: 227-238.
Kędzierski W, Cywińska A, Strzelec K, Kowalik S (2014) Changes in salivary and plasma cortisol levels in Purebred Arabian horses during race training session. Anim Sci J 85: 313-317.
Mormède P, Andanson S, Aupérin B, Beerda B, Guémené D, Malmkvist J, Manteca X, Manteuffel G, Prunet P, van Reenen CG, Richard S, Veissier I (2007) Exploration of the hypothalamic-pituitary-adrenal function as a tool to evaluate animal welfare. Physiol Behav 92: 317-339.
National Research Council (2007) Nutrient requirements of horses, 6th ed., National Academy Press, Washington DC.
Redaelli V, Luzi F, Mazzola S, Bariffi GD, Zappaterra M, Nanni Costa L, Padalino B (2019) The use of infrared thermography (IRT) as stress indicator in horses trained for endurance: a pilot study. Anim 9: 84.
Schmidt A, Aurich J, Möstl E, Müller J, Aurich C (2010) Changes in cortisol release and heart rate and heart rate variability during the initial training of 3-year-old sport horses. Horm Behav 58: 628-636.
Soroko M, Howell K, Dudek K, Henklewski R, Zielińska P (2017) The influence of breed, age, gender, training level and ambient temperature on forelimb and back temperature in racehorses. Anim Sci J 88: 347-355.
Soroko M, Howell K, Zwyrzykowska A, Dudek K, Zielińska P, Kupczyński R (2016) Maximum eye temperature in the assessment of train-ing in racehorses: correlations with salivary cortisol concentration, rectal temperature and heart rate. J Equine Vet Sci 45: 39-45.
Soroko M, Spitalniak-Bajerska K, Zaborski D, Pozniak B, Dudek K, Janczarek I (2019) Exercise-induced changes in skin temperature and blood parameters in horses. Arch Anim Breed 62: 205-213.
Stewart M, Webster JR, Schaefer AL, Cook NJ, Scott SL (2005) Infrared thermography as a non-invasive tool to study animal welfare. Anim Welf 14: 319-325.
Stewart M, Webster JR, Verkerk GA, Schaefer AL, Colyn JJ, Stafford KJ (2007) Non-invasive measurement of stress in dairy cows using infrared thermography. Physiol Behav 92: 520-525.
Valera M, Bartolomé E, Sánchez MJ, Molina A, Cook N, Schaefer A (2012) Changes in eye temperature and stress assessment in horses during show jumping competitions. J Equine Vet Sci 32: 827-830.
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