Related Experiment Video
Updated: Apr 20, 2026
15:01
Peering into the Dynamics of Social Interactions: Measuring Play Fighting in Rats
Published on: January 18, 2013
16.1K
Aggression and affiliation during social conflict in pigs
Irene Camerlink1, Simon P Turner2, Winanda W Ursinus3
1Adaptation Physiology Group, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands; Animal Breeding and Genomics Centre, Department of Animal Sciences, Wageningen University, Wageningen, The Netherlands.
Plos One
|November 27, 2014
Summary
Understanding social conflict in pigs requires an integrated approach. Analyzing behavior, physiology, and spatial distribution reveals factors influencing group cohesion, moving beyond aggression alone.
Area of Science:
- Animal Behavior and Welfare
- Ethology
- Veterinary Science
Background:
- Social conflict research traditionally focuses on aggression.
- An integrated approach, including affiliative behaviors and physiological markers, offers deeper insights into animal experiences during social conflict.
- Spatial distribution patterns can reflect an animal's experience within social conflict.
Purpose of the Study:
- To investigate the relationships between behavior, physiology, and spatial integration in pigs during social conflict.
- To assess how familiar and unfamiliar social dynamics influence spatial proximity.
- To determine the impact of housing enrichment on spatial distribution during conflict.
Main Methods:
- A 24-hour regrouping test involving 64 groups of pigs (9 weeks old).
- Data collection included aggressive and affiliative behaviors, skin lesions, body weight, and haptoglobin levels.
- Principal component analysis (PCA) was used to summarize behavioral and physiological data, which were then analyzed in relation to spatial integration (inter-individual distances, body contact).
Main Results:
- Pigs maintained closer proximity to familiar individuals than unfamiliar ones post-encounter.
- Pigs exhibiting inactivity, low social nosing, high skin lesions, and high body weight (Factor 1) tended to maintain greater distances.
- Increased aggression (Factor 2) and elevated haptoglobin (Factor 3) correlated with greater distances from unfamiliar pigs.
- Pigs in straw-enriched housing maintained greater distances than those in barren housing.
Conclusions:
- An integrated analysis of behavior, physiology, and spatial distribution provides a more comprehensive understanding of social conflict in pigs.
- Individual differences in behavior and physiology influence group cohesion dynamics.
- Environmental enrichment (straw) impacts spatial behavior during social conflict, suggesting a role in mitigating stress or promoting social buffering.
Related Concept Videos
01:47Aggression
30.8K
Humans engage in aggression when they seek to cause harm or pain to another person. Aggression takes two forms depending on one’s motives: hostile or instrumental. Hostile aggression is motivated by feelings of anger with intent to cause pain; a fight in a bar with a stranger is an example of hostile aggression. In contrast, instrumental aggression is motivated by achieving a goal and does not necessarily involve intent to cause pain (Berkowitz, 1993); a contract killer who murders for...
30.8K
01:21Secondary Motives: Affiliation Motivation and Aggression Motivation
958
Affiliation motivation is the intrinsic desire to connect with others and belong to a social group, which plays a crucial role in forming and maintaining personal relationships. This type of motivation is essential for psychological well-being, as it provides individuals with a sense of community and support. An example of this is a student who joins a study group in order to feel a sense of connection. People with high affiliation motivation actively seek social approval, take satisfaction in...
958
04:49Robbers Cave
15.2K
During the 1950s, the landmark Robbers Cave experiment demonstrated that when groups must compete with one another, intergroup conflict, hostility, and even violence may result. At the Oklahoman summer camp, two troops of boys—termed the Rattlers and the Eagles—took part in a week-long tournament. During this time, their negativity culminated in derogatory name-calling, fistfights, and even vandalism and destruction of property. However, this work also revealed that such tension...
15.2K