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The effect of three different items of cage furniture on the behaviour of male C57BL/6J mice in the plus-maze test

Published online by Cambridge University Press:  01 January 2023

K Õkva*
Affiliation:
Vivarium, University of Tartu, Ravila 19, 50090 Tartu, Estonia
T Nevalainen
Affiliation:
Laboratory Animal Center, University of Eastern Finland, PO Box 1627, 70211 Kuopio, Finland
K Mauranen
Affiliation:
Department of Mathematics and Statistics, University of Eastern Finland, Microteknia 2, Microkatu 1, F/2.krs, 70210 Kuopio, Finland
P Pokk
Affiliation:
Department of Pharmacology, Faculty of Medicine, University of Tartu, Ravila 19, 50090, Tartu, Estonia
*
* Contact for correspondence and requests for reprints: kai.okva@ut.ee

Abstract

The aim of this study was to assess the effects of specific regimens of enrichment on the behaviour of C57BL/6J mice in the elevated plus-maze test (EPM). A total of 192 male C57BL/6J mice were allocated randomly to 32 cages. Three different items of cage furniture (CF) made of aspen — a mouse corner, nestbox and stairs — were added stepwise to different cages at intervals of one week so that the mice were exposed to an item of CF for one, two, three or four weeks. On the fifth week, all the mice were subjected to the EPM test. Overall, the presence of the nestbox or stairs for the three weeks appeared to have an anxiolytic effect on the behaviour of the mice, as evidenced by an increase in the number of entries made into the open arms and the time spent in the open arms of the EPM. The effects of these items of CF on the behaviour of the mice depended on the item used and on the duration of exposure. The items of CF that were used in this study appeared to improve the quality of life of C57BL/6J mice, as assessed using the EPM.

Information

Type
Research Article
Copyright
© 2010 Universities Federation for Animal Welfare

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