Baryogenesis through gradual collapse of vortons

We evaluate the matter-antimatter asymmetry produced by emission of fermion ic carriers from vortons which are assumed to be destabilized at the electr oweak phase transition. The velocity of contraction of the vorton, calculat ed through the decrease of its magnetic energy, originates a chemical poten tial which allows a baryogenesis of the order of the observed value. This a symmetry is not diluted too much by reheating if the collapse of vortons is distributed along an interval of similar to 10(-10) sec.