Dairy Farmers of America announced Monday on its website that it has agreed to buy Dean Foods, America’s largest milk producer. Dallas-based Dean Foods declared bankruptcy in November and blamed a decades-long drop in milk consumption. The dairy co-operative said as part of the deal they will assume Dean’s liabilities and will acquire 44 of the company’s facilities, their direct store delivery system as well as other corporate assets and functions. The transaction is subject to various approvals.