From Boardgame Geek
Agricola: Farmers of the Moor is the first big expansion for Agricola.
This expansion adds to the base game with a large set of new improvements, and adds a number of new features. Horses are introduced as a new type of animal. In addition, you not only have to feed your family, but you must keep them from becoming "ill" by heating each room in your house. You can get fuel to heat your home by chopping down the forests on your farmyard, or by harvesting peat.
Agricola: Farmers of the Moor was released at Essen 2009.