Hair cortisol varies with season and lifestyle and relates to human interactions in German shepherd dogs

Scientific Reports
Lina S V RothPer Jensen

Abstract

It is challenging to measure long-term endocrine stress responses in animals. We investigated whether cortisol extracted from dog hair reflected the levels of activity and stress long-term, during weeks and months. Hair samples from in total 59 German shepherds were analysed. Samples for measuring cortisol concentrations were collected at three occasions and we complemented the data with individual scores from the Canine Behavioural Assessment and Research Questionnaire (C-BARQ). Generalised linear mixed model (GLMM) results showed that hair cortisol varied with season and lifestyle: competition dogs had higher levels than companion, and professional working dogs, and levels were higher in January than in May and September. In addition, a positive correlation was found between the cortisol levels and the C-BARQ score for stranger-directed aggression (r = 0.31, P = 0.036). Interestingly, the factor "playing often with the dog" (r = -0.34, P = 0.019) and "reward with a treat/toy when the dog behaves correctly" (r = -0.37, P = 0.010) correlated negatively with cortisol levels, suggesting that positive human interactions reduce stress. In conclusion, hair cortisol is a promising method for revealing the activity of the HPA-axis ove...Continue Reading

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Citations

Dec 13, 2016·Domestic Animal Endocrinology·Z Mack, H B Fokidis
Oct 16, 2019·Heredity·Juliane FriedrichPamela Wiener
Jun 7, 2019·Scientific Reports·Ann-Sofie SundmanLina S V Roth
Nov 17, 2020·Frontiers in Veterinary Science·Grace B BowlandJoshua B Gross
Apr 23, 2021·Scientific Reports·Amanda HöglinLina S V Roth
Oct 9, 2021·International Breastfeeding Journal·Johnny LudvigssonTomas Faresjö

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