Denmark will erect a 70-kilometre fence along the German border to stop wild boars from crossing, in the hope of preventing the spread of African swine fever, which can jeopardise the country's big pork industry.
Denmark's Environmental Protection Agency said it had approved the outline for the fence, which will be up to 1.5 metres tall. Construction will start next year.
In June, Danish politicians approved the fence, among other measures, to stop African swine fever, which has been reported in the European Union, chiefly in the Baltics, Poland and Romania.
Environment minister Jakob Ellemann-Jensen at the time said Denmark's pork exports to non-EU countries - worth 11 billion kroner ($A2.2 billion) annually - would be affected.
Unlike swine flu, African swine fever doesn't affect humans.
Australian Associated Press
