Abstract Domesticated horses mainly live in individual boxes, a housing system reported as compromising animal welfare. A common practice in riding schools involves offering a temporary period on pasture with conspecifics to alleviate the impact of long-term deprivation triggered by boxes. The aim of this study was to assess the influence of this practice using four behavioural indicators reflecting a compromised welfare state: stereotypies; aggressive behaviours towards humans; the “withdrawn posture” reflecting unresponsiveness to the environment; and the “alert posture” indicating hypervigilance. A group of 31 horses was monitored before, during and after a period of 1.5 months on pasture (intra-group comparisons) and their behaviours were compared to those of 29 horses kept in individual boxes during the study (inter-group comparisons). On pasture, no stereotypies and aggressive behaviours towards humans were observed, and the occurrence of the “alert posture” decreased, although the results were not significant. An increase in the expression of natural behaviours such as locomotion, exploration and social behaviours was observed. However, the expression of the “withdrawn posture” increased during the first five days on pasture (Friedman: P

中文翻译：

---

牧场的临时时期对饲养在单独箱子中的马的福利状况的影响

摘要 驯养的马主要生活在单独的盒子里，据报道，这种住房系统会损害动物福利。骑术学校的一种常见做法是在牧场上暂时放牧同种动物，以减轻由盒子引发的长期剥夺的影响。本研究的目的是使用反映福利国家受损的四个行为指标来评估这种做法的影响：刻板印象；对人类的攻击行为；反映对环境反应迟钝的“退缩姿势”；以及表示高度警惕的“警觉姿势”。一组 31 匹马在放牧 1.5 个月之前、期间和之后进行监测（组内比较），并将它们的行为与研究期间单独饲养的 29 匹马的行为进行比较（组间比较）。在牧场上，没有观察到对人类的刻板印象和攻击行为，“警觉姿势”的发生率下降，但结果并不显着。观察到自然行为的表达增加，例如运动、探索和社交行为。然而，在牧场上的前五天，“缩回姿势”的表现有所增加（弗里德曼：P