Veterinary composition for manufacturing a semen enhancer, useful for artificial insemination in animals. The present invention refers to a composition for manufacturing a semen additive characterized in that it contains oxytocin, lecirelin and caffeine. The semen additive is useful for enhancing fertility and prolificacy in artificial insemination of animals, particularly in mammals, in cases of low semen concentration, asthenospermia or at semen doses stored during an extended period of time under refrigeration.
