The Critical Point at which Post-Weaning Individual Housing Conditions Affect the Emission of 22-kHz Calls in Male Rats

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概要

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• It is known that long-term post-weaning individual housing significantly reduces emissions of 22-kHz calls in male rats. In this study, we assessed post-weaning successive changes in 22-kHz calls emitted by male rats under two different types of post-weaning housing conditions (individually and socially). In addition, we evaluated the critical point at which a significant reduction in 22-kHz calls could be observed in male rats housed individually after weaning. Significantly fewer 22-kHz calls were emitted by individually housed rats compared to socially housed rats at 16 weeks of age, indicating that 13 weeks after weaning may be a critical point for the reduction of 22-kHz calls caused by post-weaning individual housing.

• 公益社団法人 日本獣医学会の論文

著者

• Mori Yuji

  Laboratory of Physical Chemistry Tokyo Institute of Technology

• INAGAKI Hideaki

  Laboratory of Veterinary Ethology, Graduate School of Agricultural and Life Sciences, The University of Tokyo

• MORI Yuji

  Laboratory of Veterinary Ethology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1–1–1 Yayoi, Bunkyo-ku, Tokyo 113–8657, Japan

• INAGAKI Hideaki

  Laboratory of Veterinary Ethology, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1–1–1 Yayoi, Bunkyo-ku, Tokyo 113–8657, Japan

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