Line S W, Morgan K N, Markowitz H, Strong S
California Primate Research Center, University of California, Davis 95616.
Am J Vet Res. 1989 Sep;50(9):1523-6.
We studied 6 singly caged adult female rhesus monkeys to determine whether increased cage size had any effect on behavior or heart rate. Two monkeys at a time were placed in cages 40% larger than their standard cage for 1 week on 2 occasions, using a counter-balanced design. Direct behavioral observations were performed 75 minutes/week on each monkey. Heart rate and general activity were monitored 35 hours/week by a telemetry system. Statistically significant differences were not found in aggressive, submissive, abnormal, or self-abusive behavior, nor in time spent in the front half of the cage, duration of grooming, looking at the observer, or stereotyped or nonstereotyped locomotion. Vocalizations increased the first time in the larger cage, but not the second, and decreased upon the second return to the standard cage. Differences with respect to cage size were not found in heart rate or activity level, although there were significant variations at different times of day. We conclude that modest increases in cage size are unlikely to enrich the environment of singly caged laboratory primates.
我们研究了6只单独关在笼中的成年雌性恒河猴，以确定笼子尺寸的增加是否会对行为或心率产生任何影响。采用平衡设计，每次将两只猴子放入比其标准笼子大40%的笼子中，每次放置1周，共进行2次。每周对每只猴子进行75分钟的直接行为观察。通过遥测系统每周监测35小时的心率和一般活动情况。在攻击性行为、顺从性行为、异常行为或自我伤害行为方面，以及在笼子前半部分停留的时间、梳理毛发的持续时间、看向观察者的时间、刻板或非刻板运动方面，均未发现统计学上的显著差异。在较大笼子中的第一次，发声次数增加，但第二次没有增加，并且在第二次回到标准笼子时发声次数减少。尽管在一天中的不同时间存在显著差异，但在心率或活动水平方面未发现与笼子尺寸有关的差异。我们得出结论，笼子尺寸的适度增加不太可能丰富单独关在笼中的实验灵长类动物的环境。
