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Physiological and behavioural responses to fear and discomfort in dogs and goats

Winblad von Walter, Louise (2010). Physiological and behavioural responses to fear and discomfort in dogs and goats. Uppsala : Sveriges lantbruksuniv.
ISBN 978-91-576-9009-8
[Licentiate thesis]

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In this thesis, behavioural and physiological methods were combined to better understand reactions to fearful situations in dogs and separation in goats. Fear of gunshots is common in dogs, but also other fears, such as fear of walking on certain floors. The aim of the dog study was to establish whether it is possible to separate dogs that are fearful of floors and gunshots from dogs that do not fear these factors. This was done by studying behaviour and changes in heart rate, haematocrit, plasma cortisol, progesterone, testosterone, vasopressin and β-endorphin concentrations in thirteen dogs during a floor test and a gunshot test. Seven dogs that were fearful of floors had higher heart rate than six dogs that were fearless. However, seven dogs fearful of gunshots had higher heart rate, haematocrit and plasma concentrations of cortisol, progesterone, vasopressin and β-endorphin than six fearless dogs which demonstrates that fear of gunshots is a serious stress for the individual. The behavioural expression of fearfulness showed a large variation between individuals. The hypothesis of the goat study was that abrupt separation affects physiology and behaviour of the goats. For comparison, seven goats with their kids were first studied during suckling, a situation considered pleasant and peaceful. 3-4 days after parturition, goats and kids were separated. Suckling did not induce any cardiovascular changes in the goats. Plasma concentrations of cortisol and ß-endorphin increased, but oxytocin and vasopressin remained unaffected. Heart rate, arterial blood pressure and plasma concentrations of cortisol, β-endorphin, oxytocin and vasopressin did not change after separation. However, both goats and kids vocalised intensively. In conclusion, behavioural signs of fear and discomfort in animals are not always accompanied by corresponding changes in physiological variables. Combining both physiology and ethology is therefore desirable in evaluation of animal welfare.

Authors/Creators:Winblad von Walter, Louise
Title:Physiological and behavioural responses to fear and discomfort in dogs and goats
Year of publishing :2010
Number of Pages:45
I.I. E. Hydbring-Sandberg, L. Winblad von Walter, K. Höglund, L Swenson & B. Forkman (2004). Physiological reactions to fear provocation in dogs. Journal of Endocrinology 180, 439-448.
II.L. Winblad von Walter, L. Lidfors, A. Madej, K. Dahlborn & E. Hydbring-Sandberg 2010). Cardiovascular, endocrine and behavioral responses to suckling and permanent separation in goats. Acta Veterinaria Scandinavica 52 (51) [online]
Place of Publication:Uppsala
Publisher:Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences
Associated Programs and Other Stakeholders:SLU - Research Areas for the Future > Future Animal Health and Welfare (until Jan 2017)
ISBN for printed version:978-91-576-9009-8
Publication Type:Licentiate thesis
Full Text Status:Public
Agrovoc terms:dogs, goats, fear, stress, behaviour, physiological functions, blood pressure, endorphins, glucocorticoids, haematocrit, heart rate, oxytocin, progesterone, testosterone, vasopressin, animal welfare
Keywords:Beta-endorphin, behaviour, blood pressure, cortisol, dog, fear, goat, gunshot, haematocrit, heart rate, oxytocin, progesterone, separation, testosterone, vasopressin, welfare
Permanent URL:
ID Code:2414
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Anatomy, Physiology and Biochemistry
Deposited By: Louise Winblad von Walter
Deposited On:25 Nov 2010 00:00
Metadata Last Modified:02 Dec 2014 10:18

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