Ces fiches sont le fruit d'un travail de collaboration entre les producteurs, les clubs agroenvironnemetaux auxquels ils ont adhérés, la Fédération des producteurs de bovins et le CRDA.  Elles relatent l'expérience des producteurs face à l'essai du calculateur de GES sur leur entreprise./ Ivan Hale and his wife Jenny run the cow-calf operation they bought in 1986 after they met at the university. The couple, who now lives in Alcove, in the Outaouais, manages a herd of approximately thirty-five cows, twenty replacement heifers and twenty-eight calves along with cultivating sixty of the 120 hectares they own. They have an “organic” management that they intend to have recognized by applying for certification.