Long-tailed macaques are highly social primates that are commonly used in biomedical research as animal models. The aim of this study was to evaluate the effects of different kinds of enrichment on the behaviour and faecal cortisol metabolite (FCM) level in a colony of ex-laboratory long-tailed macaques during a programme of rehabilitation. The research was carried out in three periods, divided into two sessions each. Every period was composed of one control session (SC) and one session characterised by one type of enrichment: feeding enrichment (FE), manipulative enrichment (ME), and the last session during which manipulative and feeding enrichment were provided every day but in a mixed way (MIX). The results showed that manipulative and mixed enrichments caused positive changes to the activity budget of the colony, with a decrease in abnormal behaviour rates and an increase in play compared with control sessions. The rate of affiliative behaviours and low rate of aggression were probably because the group was composed mostly of females and it was stable, with a well-defined hierarchy. The research underlines the importance of a well-studied enrichment programme for the welfare of captive animals, which should exploit species-specific motivations.

长尾猕猴是高度社会化的灵长类动物，常用于生物医学研究作为动物模型。本研究的目的是评估不同种类的富集对康复计划期间实验室外长尾猕猴群的行为和粪便皮质醇代谢物 (FCM) 水平的影响。研究分三个阶段进行，每个阶段分为两个阶段。每个时期由一个控制阶段 (SC) 和一个以一种浓缩类型为特征的阶段组成：喂养浓缩 (FE)、操纵浓缩 (ME)，以及最后一个阶段，在此期间每天提供操纵和喂养浓缩，但在混合方式（MIX）。结果表明，操纵性和混合性富集对菌落的活动预算产生了积极的变化，与对照组相比，异常行为率降低，游戏次数增加。亲和行为率和攻击率低可能是因为该群体主要由女性组成，并且稳定，具有明确的等级制度。该研究强调了一项经过充分研究的浓缩计划对于圈养动物福利的重要性，该计划应利用特定物种的动机。