Post exercise changes in compartimentai body temperature accompanying intermittent cold water cooling in the hyperthermic horse

Marlin, D. J.; Scott, Caroline; Roberts, C. A.; Casas, I.; Holah, G.; Schroter, R. C.

doi:10.1111/j.2042-3306.1998.tb04085.x

Cited by 46 publications

(85 citation statements)

References 6 publications

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“…In the representation of decision trees built with raw data (Figure 4) and with attribute selection (Figure 5), all feature selection methods ranked armpit and breast T S as most relevant, and in the classifi cation using all attributes, both had the highest power rating. These results are consistent with those published in the literature (Marlin et al, 1998;McCutcheon and Geor, 2008).…”

Section: Huang Et Al 2008supporting

confidence: 93%

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A decision-tree-based model for evaluating the thermal comfort of horses

Maia

Oliveira

Moura

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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Thermal comfort is of great importance in preserving body temperature homeostasis during thermal stress conditions. Although the thermal comfort of horses has been widely studied, there is no report of its relationship with surface temperature (T S ). This study aimed to assess the potential of data mining techniques as a tool to associate surface temperature with thermal comfort of horses. T S was obtained using infrared thermography image processing.Physiological and environmental variables were used to defi ne the predicted class, which classifi ed thermal comfort as "comfort" and "discomfort". The variables of armpit, croup, breast and groin T S of horses and the predicted classes were then subjected to a machine learning process. All variables in the dataset were considered relevant for the classifi cation problem and the decision-tree model yielded an accuracy rate of 74 %. The feature selection methods used to reduce computational cost and simplify predictive learning decreased model accuracy to 70 %; however, the model became simpler with easily interpretable rules. For both these selection methods and for the classifi cation using all attributes, armpit and breast T S had a higher power rating for predicting thermal comfort. Data mining techniques show promise in the discovery of new variables associated with the thermal comfort of horses.

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Section: Huang Et Al 2008supporting

confidence: 93%

“…The croup is a region that is highly exposed to environmental conditions and it was used as a reference in the study of Kohn et al (1999). The breast region presents high thermal variability and can be estimated as representative of the average body surface area (Marlin et al, 1998).…”

Section: Methodsmentioning

confidence: 99%

A decision-tree-based model for evaluating the thermal comfort of horses

Maia

Oliveira

Moura

et al. 2013

Sci. agric. (Piracicaba, Braz.)

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“…Non-anaesthetized hyperthermic horses have been effectively cooled with 6°C and 15°C water-dousing (Marlin et al, 1998;Kohn, Kenneth & Kenneth, 1999). In the field it is not always possible to regulate the temperature of water, or to keep water cold.…”

Section: Discussionmentioning

confidence: 99%

Efficacy of Different Cooling Methods for Capture-Induced Hyperthermia in Antelope

Sawicka

Fuller

Fick

et al. 2015

African Journal of Wildlife Research

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The capture of wild animals is a stressful event which may cause a capture-induced hyperthermia, resulting in morbidity or mortality. We investigated whether various cooling techniques were effective at lowering the body temperature of hyperthermic animals. To achieve this, we implanted miniature temperature-sensitive data loggers into the abdomens of 12 blesbok (Damaliscus pygargus phillipsi ). Five animals were cooled by dousing with water of different temperatures (4°C, 17°C, 28°C) and fanning after dousing with 28°C water. Seven animals were cooled by ice-packs, a fine mist spray of 28°C water, intravenous (IV) infusion of one litre of 4°C saline solution or 28°C water-dousing. The body temperature after capture was significantly elevated to as high as 41°C to 42°C. Water-dousing interventions significantly decreased minimum body temperature but there was no difference in the minimum body temperature reached or the magnitude of cooling between the different water temperatures or by the addition of fanning. The ice-packs also lowered body temperature, whereas mist spraying did not. The use of ice packs and dousing with water between 4°C and 28°C were the most effective techniques to reduce capture-induced hyperthermia in blesbok. Water-dousing, when done appropriately, is the most practical and effective method to cool an animal with capture-induced hyperthermia.

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“…An efficient technique for cooling overheated horses is achieved by a team of three people using cycles of hosing with cool water, which is then scraped off and the cycle continued . Attention needs to be paid to the large vessels in the head and neck, the area between the fore‐ and hindlegs, and of course the major body mass.…”

Section: Treatment Protocols For Ehimentioning

confidence: 99%

Exertional heat illness: a review of the syndrome affecting racing Thoroughbreds in hot and humid climates

Brownlow¹,

Dart

Jeffcott

2016

Aust Veterinary J

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Metabolic heat produced by Thoroughbred racehorses during racing can rapidly elevate core body temperature (1°C/min). When environmental conditions are hot and humid, the normal physiological cooling mechanisms become ineffective. The heat accumulated may exceed a critical thermal maximum (estimated to be 42°C), which may trigger a complex pathophysiological cascade with potentially lethal consequences. This syndrome has been labelled exertional heat illness (EHI). EHI is described in humans, but has not been well documented in Thoroughbred racehorses. The clinical signs described in racehorses would suggest that the pathophysiological events affecting the central nervous (CNS) and gastrointestinal systems are similar to those described in humans. Clinical signs are progressive and include signs of endotoxaemia and increasing levels of CNS dysfunction. Initially, horses that may be mildly irritable (agitated, randomly kicking out) may progress to unmanageable (disorientation, severe ataxia, falling) and ultimately convulsions, coma and death. Currently, the approach to treatment is largely empirical and involves rapid and effective cooling, administration of drugs to provide sedation, administration of non-steroidal anti-inflammatory drugs to ameliorate the effects of endotoxaemia and glucocorticoids to stabilise cell membranes and reduce the effects of inflammation on the CNS. This review provides an overview of the current knowledge about EHI in Thoroughbred racehorses, suggests a likely pathophysiology of the syndrome in horses based on the current literature on heat illness in humans and horses, and outlines current treatment strategies being used to treat racehorses with clinical signs of EHI.

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Post exercise changes in compartimentai body temperature accompanying intermittent cold water cooling in the hyperthermic horse

Cited by 46 publications

References 6 publications

A decision-tree-based model for evaluating the thermal comfort of horses

A decision-tree-based model for evaluating the thermal comfort of horses

Efficacy of Different Cooling Methods for Capture-Induced Hyperthermia in Antelope

Exertional heat illness: a review of the syndrome affecting racing Thoroughbreds in hot and humid climates

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