Laboratoire de Comportement Animal, INRA/CNRS URA 1291, F-37380, Nouzilly, France.
J Chem Ecol. 1992 Sep;18(9):1551-7. doi: 10.1007/BF00993228.
The process of spontaneous learning in an automatic food dispenser by a group of domestic female pigs was studied when one of the animals of the group had an aversive experience. Restraining a gilt in the dispenser without access to food resulted in later avoidance of the system by other gilts, especially when the reactions of the restrained animal had been especially violent and associated with urination. The hypothesis of a delayed transmission of an unpleasant experience was tested. The food dispenser was sprayed with urine collected from either a control gilt or from an animal undergoing stress. In half of the cases, the presence of urine of a stressed animal resulted in a long-lasting avoidance of the food dispenser, suggesting the existence of some kind of alarm pheromone produced in the urine of a sow during an unpleasant experience.
当一群家养母猪中的一只经历了不愉快的体验时，研究了它们在自动食物分发器中自发学习的过程。将一只小母猪限制在分发器中而不让其进食，会导致其他小母猪以后回避该系统，尤其是当被限制的动物的反应特别激烈并伴有排尿时。测试了不愉快经历的延迟传递假说。用从对照小母猪或经历应激的动物收集的尿液喷洒食物分发器。在一半的情况下，应激动物尿液的存在导致对食物分发器的长时间回避，这表明在母猪经历不愉快体验时尿液中产生了某种报警信息素。
