Influence of exercise and emotional stresses on secretion of prolactin and growth hormone in Thoroughbred horses

Autor: Rumi Kodama, Mutsuki Ishimaru, Kazuyoshi Taya, Yasuo Nambo, Gen Watanabe, Testuro Hada, Tomoki Kitaura, Fumio Sato
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Journal of Equine Science
ISSN: 1347-7501
1340-3516
Popis: The secretion of prolactin and growth hormone in response to exercise and emotional stresses was investigated in Thoroughbreds. Two experiments were performed: one with loading of only exercise stress and one with simultaneous loading of exercise and emotional stresses. Exercise stress was loaded in 4 steps using a treadmill for horses: pre-exercise period (5 min), walking period (6.5 min), galloping period (3 min), and cooling down period (10 min). Emotional stress was loaded by showing a loud video of an audience at a racetrack during the walking period. The results clearly demonstrated that exercise stress rapidly increased the secretion of prolactin and growth hormone and that secretion of them persisted for a specific period after the exercise. In addition, emotional stress promoted prolactin secretion.
Databáze: OpenAIRE