I am strongly opposed to mass industrialized farming of this nature - even if you pretend treating animals like commodities is OK, you're creating an increasing

I am strongly opposed to mass industrialized farming of this nature - even if you pretend treating animals like commodities is OK, you're creating an increasingly centralized and fragile food supply - but pigs do not need to be forced to cannibalize each other. Whether raised on a farm or feral, pigs will gladly and with great energy devour even family members (merely injured or dead) they grew up with, given the opportunity.