title: Retention of fluid and particles in the digestive tract of the llama (Lama guanacoe f. glama).
abstract: The retention times of fluid and particles of different lengths were measured in the digestive tract of the llama. PEG was used as a fluid marker; hay particles were labelled with cerium or samarium and the samples were determined by neutron activation analysis. In compartments 1 and 2 the retention time of fluid (9.7 hr) was significantly shorter than that of particles having a length of 0.2-1.0 cm (19.2 hr) and 2.5-4.0 cm (25.0 hr). In the intestine slightly significant differences in the retention times of fluid (20.1 hr) and particles (26.2 hr) were seen. In the whole digestive tract retention times were 36.2 hr for fluid, 52.0 hr for smaller particles and 59.9 hr for larger particles.
authors.forename: R
authors.initials: R
authors.lastname: Heller
authors.forename: V
authors.initials: V
authors.lastname: Cercasov
authors.forename: W
authors.initials: W
authors.lastname: von Engelhardt
mesh_terms: D000818:Animals; D001188:Artiodactyla / Q000502:physiology*; D002161:Camelids, New World / Q000502:physiology*; D004063:Digestion; D004068:Digestive System Physiological Phenomena; D005260:Female; D007422:Intestines / Q000502:physiology; D008297:Male; D013270:Stomach / Q000502:physiology; D013997:Time Factors