Sleep is a significant biological requirement for all living mammals due to its restorative
properties and its cognitive role in memory consolidation. Sleep is ubiquitous amongst all …

Biological rhythms evolved to provide temporal coordination across all tissues and organs
and allow synchronization of physiology with predictable environmental cycles. Most …

The production of melatonin during night-time hours decodes day length for seasonally
breeding animals. The use of artificial light to advance the breeding season in mares is …

Simple Summary All mammals have an internal timing system that is responsible for
regulating most aspects of physiology and behaviour. This internal timing system, or body …

In mammals the light-dark (LD) cycle is known to be the major cue to synchronize the
circadian clock. In arid and desert areas, the camel (Camelus dromedarius) is exposed to …

Horses typically spend between from 4 to 15 hours a day in standing rest and anywhere
from minutes to several hours lying down. Horses that have less sleep due to prolonged …

In contrast to studies showing gradual adaptation of melatonin (MT) rhythms to an advanced
photoperiod in humans and rodents, we previously demonstrated that equine MT rhythms …

Shifting the onset of light, acutely or chronically, can profoundly affect responses to infection,
tumor progression, development of metabolic disease, and mortality in mammals. To date …

In seasonally breeding animals, photoperiod perception is crucial for timing of important
physiological events. In the horse, long day photoperiod influences the onset of ovulation …

Exposure to white light at night suppresses melatonin production, impacts circadian rhythms
and contributes to ill-health in humans. Human interaction with horses frequently occurs at …