飼育下チンパンジーの子育て困難 : 人工哺育は回避可能か  [in Japanese] Difficulties chimpanzee mothers under captivities face in providing maternal care : early maternal separation or social deprivation are not the only reason  [in Japanese]

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Abstract

飼育下チンパンジーの出産,子育て状況をGreat Ape Information Network(GAIN)データベースをもとに分析した。これまで,飼育下チンパンジーの育児放棄,子育て困難の原因として,早期に母子分離を経験し,社会的隔離状態に置かれたことが指摘されてきた。しかし,今回の分析から,母子分離も社会的隔離も経験していない個体においても同様に子育てが困難であることが見られた。野生のチンパンジーに比べ出産間隔が短く,結果として授乳期が短い事例も見られた。多摩動物公園の事例では,子育て行動は見られるものの,母乳の分泌不足が原因で人工哺育に至る場合もあった。今後は繁殖の候補の選択にあたっては,母子分離の時期,飼育環境,出産歴といったプロフィールに加え,母乳の分泌に関する生理学的な検証を含んだシステムの構築が求められる。

Chimpanzees under captivities are known to have difficulties in raising babies. Early maternal separation and lack of social interaction with peers have been pointed out as the cause. We have looked over the child rearing behavior of captive chimpanzees in Japan using Great Ape Information Network (GAIN). The results show that rate of difficulties mother chimpanzees face are as high for those without early separation or the social isolation. Those under captivities sometimes have much shorter birth intervals before giving birth to the next baby, resulting in shorter breast feeding period for the older sibling. Some of the chimpanzees in Tama Zoological Park, Tokyo, Japan had difficulties raising the baby, not by the refusal by the mother, but due to the lack of breast milk. Our data suggest that upon deciding on reproduction, it is important to go through the history of the would be mother in terms of the early separation from the mother or the experiences of social isolation or the number of birth, but also to conduct some physiological tests to see if the milk would be available for the baby. Artificially nursed chimpanzees often end up in social isolation, resulting in poor quality of life and very costly as well that it is very important to take the caution for the reproduction of captive chim-panzees.

Journal

The bulletin of the Nippon Veterinary and Life Science University   [List of Volumes]

The bulletin of the Nippon Veterinary and Life Science University 56, 28-35, 2007-12  [Table of Contents]

Nippon Veterinary and Life Science University

Codes

  • NII Article ID (NAID) :
    110006978408
  • NII NACSIS-CAT ID (NCID) :
    AA12205414
  • Text Lang :
    JPN
  • Article Type :
    Journal Article
  • ISSN :
    03738361
  • Databases :
    NII-ELS  IR