A customised combination of environmental enrichment reduces aggression in CD-1 male mice
Abstract
Murine aggression has profound implications on animal welfare and husbandry. This report examines how three distinct combinations of environmental enrichment - wheel, igloo and tunnel; wheel, igloo, and tunnel with nesting; and tunnel with nesting - affect aggressive behaviour in CD-1 male mice. We found that combining wheel/igloo/tunnel enrichment with nesting or replacing the wheel/igloo with two tunnels while maintaining the nesting enrichment reduced aggression. These findings not only suggest how enrichment can improve the welfare of aggressive male mice but also emphasise the need for further research to determine the optimal combination of enrichment.
L’agression murine a des implications profondes sur le bien-être animal et l’élevage. Ce rapport examine comment trois combinaisons distinctes d’enrichissement environnemental – roue, igloo et tunnel; roue, igloo et tunnel avec nidification; et tunnel avec nidification – affectent le comportement agressif des souris mâles CD-1. Nous avons constaté que la combinaison de l’enrichissement roue/igloo/tunnel avec la nidification ou le remplacement de la roue/igloo par deux tunnels tout en maintenant l’enrichissement nidification réduisait l’agression. Ces résultats suggèrent non seulement comment l’enrichissement peut améliorer le bien-être des souris mâles agressives, mais soulignent également la nécessité de poursuivre les recherches pour déterminer la combinaison optimale d’enrichissement.
Aggression bei Mäusen hat…
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