We studied the behavioral responses of three brown bears (Ursus arctos) to different types of enrichment devices to assess the predominant pattern of animal-enrichment interaction (PAI) to each type of enrichment. We assessed the bears' responses to feeding, sensory, and occupational enrichments over nine sessions. Using Pearson's correlation (r) and the coefficient of variation (CV)-we describe four models of PAIs: habituation, increasing, continuous, and fluctuating. The habituation model (r < 0 and p < 0.05; CV (%) > 0) consists of a loss of interest in the device over time and it occurred with the occupational device. The increasing model (r > 0 and p < 0.05; CV (%) > 0) consists of a sustained interest in the device over time and it was not observed for any device of this study. The continuous model (0 > r > 0 and p > 0.05; CV (%) < 100) consists of a consistent and unchanging interaction over time and it occurred with the feeding enrichments used in this study. The fluctuating PAI (0 > r > 0 and p > 0.05; CV (%) ≥ 100) consists of wide oscillations in the degree of interaction over time and we observed this pattern with sensory devices. Review of previous literature supports these classes of PAI, and suggests similar relationships between PAIs and the type of enrichment as we observed in this study.

中文翻译：

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圈养棕熊的动物与富集互动模式

我们研究了三只棕熊 (Ursus arctos) 对不同类型富集设备的行为反应，以评估每种富集类型的动物-富集相互作用 (PAI) 的主要模式。我们评估了熊在九个会话中对喂养、感官和职业丰富的反应。使用 Pearson 相关性 (r) 和变异系数 (CV) - 我们描述了四种 PAI 模型：习惯性、增加、连续和波动。习惯模型（r < 0 和 p < 0.05；CV (%) > 0）包括随着时间的推移对设备失去兴趣，并且它发生在职业设备上。增加的模型（r > 0 和 p < 0.05；CV (%) > 0）包括随着时间的推移对设备的持续兴趣，并且在本研究的任何设备中都没有观察到这种情况。连续模型 (0 > r > 0 且 p > 0.05；CV (%) < 100) 包含随着时间的推移一致且不变的相互作用，并且它发生在本研究中使用的喂养浓缩物。波动的 PAI（0 > r > 0 和 p > 0.05；CV (%) ≥ 100）由交互程度随时间的广泛波动组成，我们用感官设备观察到这种模式。对先前文献的回顾支持这些类别的 PAI，并提出了我们在本研究中观察到的 PAI 与富集类型之间的类似关系。CV (%) ≥ 100) 由交互程度随时间的广泛波动组成，我们用感官设备观察到了这种模式。对先前文献的回顾支持这些类别的 PAI，并提出了我们在本研究中观察到的 PAI 与富集类型之间的类似关系。CV (%) ≥ 100) 由交互程度随时间的广泛波动组成，我们用感官设备观察到了这种模式。对先前文献的回顾支持这些类别的 PAI，并提出了我们在本研究中观察到的 PAI 与富集类型之间的类似关系。