Effects of novelty stress on neuroendocrine activities and running performance in thoroughbred horses

Journal of Neuroendocrinology
T HadaK Yagi

Abstract

This study investigated the effects of novelty stress on neuroendocrine activities and running performance in Thoroughbred horses. First, to examine the neuroendocrine responses to novelty stress, we exposed horses to two types of novel environmental stimuli (audiovisual or novel field stimuli). After the stimuli, plasma concentrations of vasopressin, catecholamines and adrenocorticotropin (ACTH), as well as heart rates, were significantly increased in each experiment. Second, we investigated neuroendocrine activities during incremental exercise. Plasma concentrations of vasopressin, catecholamines, ACTH and blood lactate increased as the exercise load increased. Finally, we investigated the effects of novelty stimuli on neuroendocrine activities and running performance during supra-maximal exercise (110% VHRmax). When the novelty stimuli were presented to horses, the increases in plasma vasopressin and catecholamines due to exercise load were significantly smaller than those in the control experiments. Blood lactate during supra-maximal exercise was also significantly lower and total run time until exhaustion was prolonged in the novel environmental stimuli compared to the control. These results suggest that novelty stimuli fa...Continue Reading

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Citations

Sep 29, 2012·BMC Veterinary Research·Sebastian D McBride, Daniel S Mills
Mar 12, 2011·The Veterinary Clinics of North America. Equine Practice·Samuel D A Hurcombe
Mar 14, 2013·Animal Science Journal = Nihon Chikusan Gakkaihō·Esterina FazioAdriana Ferlazzo
Apr 14, 2016·Physiology & Behavior·Clare Parker FischerL Michael Romero
Jan 13, 2015·Research in Veterinary Science·Trohadio MunozJean-Pierre Lavoie
Feb 21, 2019·Journal of Neuroendocrinology·Tatsushi Onaka, Yuki Takayanagi
Aug 19, 2006·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·Nao OhiwaHideaki Soya
Jan 5, 2020·Journal of Applied Animal Welfare Science : JAAWS·Alison M CarpenterMatthew C Leach
Jul 9, 2020·Veterinary World·Adriana FerlazzoPietro Medica
Aug 23, 2020·Animals : an Open Access Journal From MDPI·Heidrun GehlenJudith Winter

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