Welcome to the artificial insemination centre in Hohenzell, Upper Austria. The bulls at the centre mount either an artificial cow or another bull to ejaculate so that their semen can be collected. The breeding centre exports cattle semen to more than 52 countries worldwide and last year it sold approximately 800,000 samples. Portions of semen from bulls belonging to the Simmental breed cost between 6 and 15 euros. One bull at the centre, Wille, has produced 5 million euros worth of semen over the course of his lifetime.