title: The relevance of drowsiness in the circadian cycle of farm animals.
mesh_terms: D000818:Animals; D000829:Animals, Domestic; D002940:Circadian Rhythm; D004569:Electroencephalography; D004576:Electromyography; D005260:Female; D006339:Heart Rate; D006736:Horses; D008297:Male; D009043:Motor Activity; D011187:Posture; D012119:Respiration; D012756:Sheep; D012890:Sleep; D013045:Species Specificity; D013552:Swine; D014851:Wakefulness