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. Owner of the family farm for thirty years, Gérald Semmelhaack and his son Richard manage a cow-calf operation and cultivate sixty hectares. They do finishing and semi-finishing with a herd of forty cows, ten replacement heifers and thirty-five calves. They also have a flock of sixty ewes that produce approximately one hundred lambs annually. It was after completing his studies in administration that Richard joined his father to develop the operation located in Stukely-South in the Eastern Townships.