Pigs in large groups less aggressive
Research conducted at the Prairie Swine Centre in
Saskatoon, Canada, shows that pigs raised in very large groups tend to be less
aggressive than those raised in small groups.
In the past ten years the Prairie Swine Centre has carried out many trials
looking at the dynamics of group housing including such things as the impact of
group size on social behaviour and aggression.
Dr Harold Gonyou, a research scientist in animal behaviour, says
pigs seem to learn from their social environment how they should react
Gonyou speculates that somewhere between 50 and 100 pigs
per pen is where he starts seeing a difference in the social behaviour of the
In his experience, they become more
socially tolerant, less willing to fight if housed in larger groups. Gonyou says
this pays off later on when the pigs are mixed during loading and transport to
â€¢ Praire Swine
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