Most likely Jocko will never lose this status: the most popular Holstein bull in French history. After all, no other French bull has ever passed the milestone of one million doses of semen sold – but Jocko did so with a lot of enthusiasm and even reached 1,730,000 doses sold! Which puts him in the top-8 of the world’s most sold bulls for all time. Thanks to this popularity, Jocko received unprecedented influence. How was he bred? Through the instinct of two passionate breeders, father Joseph and son Gildas Fertil. They composed the pedigree of this super millionaire cleverly and deliberately. Gildas shared the details with HI.