Journal of Veterinary Medical Science
Online ISSN : 1347-7439
Print ISSN : 0916-7250
ISSN-L : 0916-7250
Ethology
The Critical Point at which Post-Weaning Individual Housing Conditions Affect the Emission of 22-kHz Calls in Male Rats
Hideaki INAGAKIYuji MORI
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2013 年 75 巻 4 号 p. 527-529

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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.

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© 2013 by the Japanese Society of Veterinary Science

この記事はクリエイティブ・コモンズ [表示 - 非営利 - 改変禁止 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ja
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