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Open AccessArticle

Effects of Transport Conditions on Behavioural and Physiological Responses of Horses

Department of Agricultural and Food Sciences, University of Bologna, Viale Fanin 44, 40127 Bologna, Italy
School of Animal and Veterinary Sciences, Charles Stuart University, Wagga, NSW 2650, Australia
Author to whom correspondence should be addressed.
Animals 2020, 10(1), 160;
Received: 17 December 2019 / Revised: 15 January 2020 / Accepted: 15 January 2020 / Published: 17 January 2020
(This article belongs to the Special Issue Horse Welfare)
The aim of this study was to document the effects of 12 hours’ confinement in comparison with 12 h of transportation in single and wide bays, and in backward and forward positioning, on horse behavioural, physiological, laboratory and gastroscopy parameters. Behaviours relating to stress and balance occurred more frequently during transport than during confinement, and transport in a rear-facing position and in a wider bay size were associated with reduced balance-related behaviours. An increased frequency of balance behaviours, in particular loss of balance, and transport-related increases in heart rate and rectal temperature were associated with gastric ulceration after transportation. While effects of bay size and direction of travel on stress behaviours were less clear and require further study, this study suggests that adequate space and rear-facing positioning facilitates better balance and may enhance the health and welfare of transported horses. Behavioural observations, heart rate and monitoring of rectal temperature are useful to identify horses at risk for development of transport-related diseases.
The regulations for minimal space and direction of travel for land transport in horses vary worldwide and there is currently no definitive guidance to promote equine health and welfare. This study evaluated the effects of bay size and direction of travel (forwards/backwards) in horses by comparing the behavioural, physiological, laboratory and gastroscopy parameters between transported and confined horses. A total of twenty-six mares took part in the study; 12 horses were confined for 12 h, and all mares underwent 12 hours’ transportation, travelling in single (n = 18) or wide bays (n = 8), and forward (n = 10) or rear (n = 16) facing. Behaviour was recorded during confinement/transportation and analysed using a behaviour sampling ethogram. Clinical examination, blood samples and gastroscopy were conducted before and after confinement/transportation. The frequency of behaviours relating to stress and balance increased during transport, and horses transported in a rear-facing position and in a wider bay size showed fewer balance-related behaviours. Balance behaviours, particularly loss of balance, were positively associated with the severity of gastric ulceration after transportation and elevated muscle enzymes, while increased stress behaviours correlated with decreased gastrointestinal sounds. Heart rate and rectal temperature after transportation were positively associated with balance and stress behaviours, and with squamous gastric ulcer scores. Transportation was associated with expected increases in cortisol and muscle enzymes, but positioning and space allowance had minimal effects on these analytes. Findings suggest that transportation in a rear-facing position and in wider bays might reduce the impact of transport on horse health and welfare, and monitoring behaviour in transit and physiological measurements after transportation should be recommended. Behavioural and physiological parameters were more sensitive than haematological, biochemical or endocrine analytes to identify horses suffering from transport stress. View Full-Text
Keywords: travelling; welfare; space; position; behaviour; stomach ulcers; equine travelling; welfare; space; position; behaviour; stomach ulcers; equine
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Padalino, B.; Raidal, S.L. Effects of Transport Conditions on Behavioural and Physiological Responses of Horses. Animals 2020, 10, 160.

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