The pastures do not need to be next to the house, only orthoganally next to each other. The same is true for fields or house rooms; each item needs to be orthoganally next to other items of the same type, but different types of items can be grouped away from other item types.
But to answer your question directly: No, the board does not wrap. Items on the left edge of the board are not considered adjacent to items on the right edge of the board.
[Edit: Triple ninja'd]
But to answer your question directly: No, the board does not wrap. Items on the left edge of the board are not considered adjacent to items on the right edge of the board.
[Edit: Triple ninja'd]