title: [Energy equilibrium during sleep in ruminants].
abstract: Measurements of heat exchanges were made in calves and sheep before and after shearing isolated in a gradient-layer calorimeter which also operates as an open-circuit separation chamber or the head maintained in a hood for respiration exchanges. Sheep with fleeces were in negative heat balance during periods of sleep. In calves and shorn sheep, heat production and heat loss were equally reduced during sleep.
mesh_terms: D000818:Animals; D001833:Body Temperature Regulation; D001921:Brain / Q000378:metabolism*; D002417:Cattle / Q000502:physiology*; D004734:Energy Metabolism; D006197:Hair / Q000502:physiology; D012756:Sheep / Q000502:physiology*; D012890:Sleep / Q000502:physiology*
vernacular_title: Equilibre énergétique au cours du sommeil chez les ruminants