کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6379834 | 1625434 | 2007 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasonic vocalizations as indicators of welfare for laboratory rats (Rattus norvegicus)
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم دامی و جانورشناسی
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چکیده انگلیسی
Adult laboratory rats produce two distinct types of ultrasonic vocalization (USV) that appear to reflect the caller's emotional state, either positive (50Â kHz) or negative (22Â kHz). If these calls can influence the emotional state and related behaviour of group-mates, then such calls may act as useful indicators of welfare for not only the vocalizing rat, but also other non-vocalizing individuals within auditory range. We therefore investigated the effect of playing back these different USVs on the behaviour of rats in an emergence test, a test of anxiety. In an initial experiment, we compared the response of 20 rats to playback of either background noise or to playbacks of 22Â kHz vocalizations from conspecifics. Rats that received playback of the 22Â kHz USVs were less likely to emerge, showed an increased latency to emerge and spent less total time in the open arena than rats receiving playback of background noise, suggesting a state of increased anxiety. In a second experiment, the same 20 rats received playback of either background noise or 50Â kHz vocalizations from conspecifics. Rats receiving 50Â kHz USV playback showed no difference in emergence behaviour to those rats receiving background noise. Taken together, these results suggest that 22Â kHz USVs can induce a negative emotional state of increased anxiety in rats hearing the vocalization, and could therefore be a useful indicator of welfare for rat groups; including both callers and non-calling group-mates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Animal Behaviour Science - Volume 104, Issues 1â2, April 2007, Pages 116-129
Journal: Applied Animal Behaviour Science - Volume 104, Issues 1â2, April 2007, Pages 116-129
نویسندگان
Oliver H.P. Burman, Alexander Ilyat, Gareth Jones, Michael Mendl,