title: [Emptying of the abomasum in adult ruminants].
abstract: In the adult ruminant, abomasal emptying is a permanent phenomenon depending upon meal volume. Intradian rhythm involving the motor pattern of the duodenum and circadian rhythm of unknown origin modulate the transpyloric flow rate. The fundic tone, antro-duodenal coordination and pyloric resistance regulate gastric outflow. The break-like function of the pyloric resistance involves chyme viscosity. Transpyloric flow rate is controlled by a hierarchy of extrinsic and intrinsic mechanisms triggered at the duodenal level. The vagus permanently inhibits the motility of the abomasum. A similar relationship is observed between the pyloric sphincter and duodenal motility. Removal of the pyloric ring leads to an increased food intake.
authors.affiliation: Ecole nationale vétérinaire, laboratoire associé de physiologie, Toulouse, France.
authors.forename: C H
authors.initials: CH
authors.lastname: Malbert
authors.forename: Y
authors.initials: Y
authors.lastname: Ruckebusch
mesh_terms: D000018:Abomasum / Q000294:innervation / Q000502:physiology*; D000818:Animals; D001188:Artiodactyla / Q000502:physiology*; D002940:Circadian Rhythm; D005746:Gastric Emptying / Q000502:physiology*; D005769:Gastrointestinal Motility; D009424:Nervous System Physiological Phenomena
vernacular_title: Evacuation de la caillette chez les ruminants adultes.