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Can sleep behaviour be used as an indicator of stress in group-housed rats?

By Usama Abou-Ismail, Oliver Burman, Christine Nicol and Michael Mendl


We assessed the value of sleep behaviour as a novel measure of stress in group-housed animals. We observed, non-invasively, sleep behaviour in 144 group-housed rats, and related it to other physiological and physical indicators of stress and welfare. Sleep frequency and duration correlated negatively with adrenal weight, and positively with bodyweight gain, and final bodyweight. Thus, low frequencies of sleep behaviour and low sleep duration correlate with some indicators of elevated physiological and physical stress, raising the possibility that sleep behaviour may provide an under-utilised, but potentially important, non-invasive indicator of stress and welfare for animals in groups

Topics: C120 Behavioural Biology, D328 Animal Welfare
Publisher: UFAW
Year: 2007
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