It's a mod placeable created by the team IMMM which revives the way of playing with sheep. In Farming Simulator 19, only cows produce milk, but that was before.
This mod has two pastures, one quite classic which produces wool and another which produces sheep's milk. The way of taking care of the animals remains unchanged, only the productions change. The pens can accommodate 150 animals for a price of 50.000 €. LThe capacity of the milk pallets is 3000 liters.