Bloomsmith M A, Finlay T W, Merhalski J J, Maple T L
University of Texas M.D. Anderson Cancer Center, Department of Veterinary Resources, Bastrop 78602.
Lab Anim Sci. 1990 May;40(3):319-22.
The use of rigid, plastic balls as enrichment devices for 16 captive chimpanzees was studied at The University of Texas M.D. Anderson Cancer Center chimpanzee colony. After the subjects were presented with balls, 10 hours of data were collected for each subject using a scan-sampling technique. The mean percentage of ball-use time for all subjects during the study was 7.1%. There was no sex difference in ball use. Age and housing effects were obtained, with younger animals and those housed in more barren environments exhibiting higher levels of ball use. It is concluded that the balls were worthwhile additions to the chimpanzee environments with use stabilizing at a mean of 2.5% of the subjects' time.
德克萨斯大学MD安德森癌症中心的黑猩猩群落对16只圈养黑猩猩使用硬质塑料球作为丰富环境的装置进行了研究。在给这些受试黑猩猩提供球之后，采用扫描取样技术为每只受试黑猩猩收集了10小时的数据。在研究期间，所有受试黑猩猩使用球的平均时间百分比为7.1%。在使用球方面不存在性别差异。得出了年龄和饲养环境的影响，较年轻的动物以及饲养在更贫瘠环境中的动物使用球的水平更高。得出的结论是，这些球值得添加到黑猩猩的环境中，使用时间稳定在受试黑猩猩时间的平均2.5%。
