Captive primates require environmental enrichment to minimize physical and mental stress. However, only a few objective evaluations have been performed to assess environment-induced physiological variations in these animals. In this study, we evaluated the usage of the metabolic profile test (MPT) to assess the influences of the housing environment on the physiology of Japanese macaques. Five male macaques were housed in an old type of cage (old cage group), in which the macaques were exposed to wind (except for a shelter box), and four males were in a new -type of cage (new cage group), which had a sub-room with a waterer that was surrounded by insulating panels. Blood samples were collected bimonthly for a year from the two groups to determine the complete blood count and blood biochemistry. The increase in the body weight of the macaques in both groups was suppressed during the cold season. Furthermore, this suppression was more pronounced in the old cage group, suggesting that the energy expenditure was higher in the old cage group than in the new cage group. Moreover, the red blood cell count and hematocrit values were higher during the cold season in both cages than during the warm season, suggesting that macaques were dehydrated during the cold season. Dehydration tendency was more pronounced in the macaques from the old cage group than in those from the new cage group, suggesting that their water intake decreased during the cold season. Our results suggest that the MPT can be used to evaluate environment-induced physiological variations in Japanese macaques.

圈养灵长类动物需要丰富的环境，以尽量减少身心压力。然而，仅进行了少数客观评估来评估这些动物中环境引起的生理变化。在这项研究中，我们评估了代谢特征测试 (MPT) 的使用，以评估居住环境对日本猕猴生理的影响。5只雄性猕猴被安置在一个旧型笼子（旧笼组）中，其中猕猴暴露在风中（避风箱除外），4只雄性猕猴在一种新型笼子（新笼组）中，它有一个带饮水器的子房间，周围是绝缘板。一年内每两个月从两组中收集血液样本，以确定全血细胞计数和血液生化。在寒冷季节，两组猕猴的体重增加均受到抑制。此外，这种抑制在旧笼组中更为明显，表明旧笼组的能量消耗高于新笼组。此外，两个笼子的红细胞计数和血细胞比容值在寒冷季节都高于温暖季节，这表明猕猴在寒冷季节脱水。与新笼组相比，旧笼组的猕猴脱水趋势更明显，表明它们在寒冷季节的饮水量减少。我们的结果表明 MPT 可用于评估日本猕猴的环境引起的生理变化。这种抑制在旧笼组中更为明显，表明旧笼组的能量消耗高于新笼组。此外，两个笼子的红细胞计数和血细胞比容值在寒冷季节都高于温暖季节，这表明猕猴在寒冷季节脱水。与新笼组相比，旧笼组的猕猴脱水趋势更明显，表明它们在寒冷季节的饮水量减少。我们的结果表明 MPT 可用于评估日本猕猴的环境引起的生理变化。这种抑制在旧笼组中更为明显，表明旧笼组的能量消耗高于新笼组。此外，两个笼子的红细胞计数和血细胞比容值在寒冷季节都高于温暖季节，这表明猕猴在寒冷季节脱水。与新笼组相比，旧笼组的猕猴脱水趋势更明显，表明它们在寒冷季节的饮水量减少。我们的结果表明 MPT 可用于评估日本猕猴的环境引起的生理变化。两个笼子的红细胞计数和血细胞比容值在寒冷季节都高于温暖季节，这表明猕猴在寒冷季节脱水。与新笼组相比，旧笼组的猕猴脱水趋势更明显，表明它们在寒冷季节的饮水量减少。我们的结果表明 MPT 可用于评估日本猕猴的环境引起的生理变化。两个笼子的红细胞计数和血细胞比容值在寒冷季节都高于温暖季节，这表明猕猴在寒冷季节脱水。与新笼组相比，旧笼组的猕猴脱水趋势更明显，表明它们在寒冷季节的饮水量减少。我们的结果表明 MPT 可用于评估日本猕猴的环境引起的生理变化。