BRUSSELS — Belgium has selected dark thriller “Rundskop” (Bullhead) as its candidate for the foreign-language film Oscar race in 2012.The film tells the story of a young farmer (Matthias Schoenaerts) who pumps illegal growth hormones into himself and his cattle leading to the bad consequences. Directed by first-timer Michael R. Roskam, the film mixes Flemish- and French-speaking characters, making it a rare example of a story straddling Belgium’s main language communities. “Rundskop” bowed at home in February, just before its international debut at the Berlin Film Festival. World sales are handled by Celluloid Dreams. Meanwhile, Luxembourg has no film to send to the Oscars. This will be the third successive year that the country has sat out the race. The deadline for all countries to send in their submissions is Oct. 1. The Academy Awards will be held Feb. 26 at the Kodak Theater in Hollywood.