Kowalski Nicole L, Dale Robert H I, Mazur Christa L H
Indianapolis Zoological Society, Indianapolis, Indiana, USA.
Zoo Biol. 2010 Mar-Apr;29(2):104-19. doi: 10.1002/zoo.20195.
We used four surveys to collect information about the birth, physical growth, and behavioral development of 12 African elephant calves born in captivity. The management of the birth process and neonatal care involved a variety of standard procedures. All of the calves were born at night, between 7PM and 7AM. The calves showed a systematic progression in behavioral and physical development, attaining developmental milestones at least a quickly as calves in situ. This study emphasized birth-related events, changes in the ways that calves used their trunks, first instances of behaviors, and interactions of the calves with other, usually adult, elephants. Several behaviors, such as the dam covering her calf with hay and the calf sucking its own trunk, were common in the captive situation and have been observed in situ. Overall, the behaviors of the calves resembled those observed for African elephant calves in situ. These data should help in the management of African elephants under human care by providing systematic reference values for the birth and development of elephant calves.
我们通过四项调查收集了12头圈养出生的非洲象幼崽的出生、身体生长和行为发育信息。分娩过程的管理和新生儿护理涉及多种标准程序。所有幼崽均在夜间出生,时间为晚上7点至早上7点。幼崽在行为和身体发育方面呈现出系统的进展,达到发育里程碑的速度至少与野生环境中的幼崽一样快。本研究重点关注与出生相关的事件、幼崽使用象鼻方式的变化、行为的首次出现以及幼崽与其他通常为成年大象的互动。一些行为,如母象用干草覆盖幼崽以及幼崽吮吸自己的象鼻,在圈养环境中很常见,在野生环境中也有观察到。总体而言,这些幼崽的行为与在野生环境中观察到的非洲象幼崽的行为相似。这些数据通过为象幼崽的出生和发育提供系统的参考值,应有助于人工饲养下非洲象的管理。