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Individual play patterns stimulated by a familiar object are group-driven
Manja Zupan1, Therese Rehn2, Daiana de Oliveira2
1Swedish University of Agricultural Sciences, Department of Animal Environment and Health, P. O. Box 7068, 750 07, Uppsala, Sweden. manja.zupan@slu.se.
Scientific Reports
|April 17, 2019
Summary
Juvenile pigs exhibit distinct play styles, with "initiators" playing more alone and "joiners" more socially. Group play dynamics reveal object play occurs more than expected, indicating complex social interactions in young pigs.
Area of Science:
- Animal Behaviour
- Ethology
- Animal Social Dynamics
Background:
- Play behaviour is crucial for development in juvenile animals.
- Understanding individual differences in play is key to social dynamics.
- Previous research often lacks detailed analysis of object play sequences.
Purpose of the Study:
- To investigate the dynamics of play behaviour in juvenile pigs using advanced statistical methods.
- To identify and categorize individual play styles (initiator vs. joiner).
- To analyze group-level play patterns and object interaction frequency.
Main Methods:
- Utilized state sequence analysis with the TraMineR package on 30-minute home pen play test data.
- Defined behavioural states as object play, locomotor/social play, and no play.
- Categorized individuals as 'initiator' or 'joiner' based on object play proportions.
Main Results:
- Initiators showed more solitary and object play; joiners were more social with less object play.
- Groups without initiators played more on average.
- Object play occurred simultaneously in groups more often than by chance, with stable group sizes during play.
Conclusions:
- Juvenile pig play is characterized by individual strategies and group dynamics.
- Object play is a significant social component, often occurring collaboratively.
- Statistical modeling reveals nuanced patterns in animal play behavior.
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