Department of Biological Sciences and Biotechnology, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia.
Chubu University Academy of Emerging Sciences, Kasugai-shi, Aichi, Japan.
J Appl Anim Welf Sci. 2022 Jul-Sep;25(3):244-255. doi: 10.1080/10888705.2021.1910032. Epub 2021 Apr 10.
Assessments of the welfare status of captive and semi-captive animals often compare how their expression of natural behaviors differs from that of free-ranging conspecifics. From December 2015-2016, we recorded and analyzed the activity budget and postural behaviors of three orangutans in Bukit Merah Orang Utan Island (BMOUI) to evaluate their welfare status. The orangutans' activity budget was dominated by resting (60%), feeding (13%), playing (14%), and moving (9%). Behavioral categories followed a similar trend: resting > feeding > moving > playing, except that the subadult male spent significantly more time playing than the two adults. The most predominant posture was sitting (47.0%), followed by pronograde standing (29.4%), lying (10.5%), and clinging (4.5%). Our results suggest that orangutans on BMOUI engage in less feeding but more resting, and show less postural diversity than free-ranging individuals. We propose that appropriate interventions to shift activity budgets, especially feeding vs. resting, and postural behaviors of captive orangutans toward those found in free-ranging orangutans might be beneficial for their welfare and survival.
评估圈养和半圈养动物的福利状况时，通常会比较它们表达自然行为的方式与自由放养同物种动物的行为方式有何不同。2015 年 12 月至 2016 年 12 月，我们记录和分析了布基特·梅拉·奥朗古图安岛（BMOUI）的三只猩猩的活动预算和姿势行为，以评估它们的福利状况。猩猩的活动预算主要由休息（60%）、进食（13%）、玩耍（14%）和移动（9%）组成。行为类别也遵循类似的趋势：休息>进食>移动>玩耍，除了未成年雄性比两个成年雄性花更多的时间玩耍。最主要的姿势是坐着（47.0%），其次是前肢直立（29.4%）、躺着（10.5%）和附着（4.5%）。我们的研究结果表明，BMOUI 的猩猩的进食量较少，但休息时间较长，而且姿势多样性比自由放养的个体少。我们建议，适当干预活动预算，特别是进食与休息的比例，以及圈养猩猩的姿势行为，使其向自由放养猩猩的行为方式转变，可能有助于提高它们的福利和生存能力。
