28 December 2021, Sutri, Italy - Maremmana cows at the Fattoria Faraoni farm. The farm adopted the Voisin's rational grazing (VRG), a regenerative livestock farming system proposed by French scientist Andre Voisin in the 1950s in order to increase forage production, provideing several advantages, such as negative net carbon emission, reduced soil erosion, and increased biodiversity.