Topic:Adrenaline
Adrenaline, also known as epinephrine, is a hormone and neurotransmitter that plays a significant role in the physiological response to stress or perceived threats in horses. It is produced by the adrenal glands and is involved in the 'fight or flight' response, preparing the horse for rapid action. Adrenaline increases heart rate, expands air passages, and mobilizes energy stores, among other physiological changes. In equine studies, adrenaline is often examined in relation to stress responses, performance, and behavior. This page compiles peer-reviewed research studies and scholarly articles that explore the production, regulation, and effects of adrenaline in horses, as well as its implications for equine health and management.
Influence of halothane and catecholamines on heart rate and rhythm in the horse. 1. Ventricular ectopic beats were recorded in eight of thirteen conscious horses following the intravenous administration of adrenaline in doses of 3 mug/kg. Following pre-treatment with either atropine sulphate (0.1 mg/kg) or propranolol hydrochloride (0.1 mg/kg), the same dose level of adrenaline failed to produce ventricular ectopic beats.2. Halothane anaesthesia sensitized the equine heart to the arrhythmogenic actions of adrenaline; the incidence and duration of ventricular arrhythmias being greater than in conscious animals. In comparison with the findings in conscious horses, ether anae...