Milford, Ind-based CTB International Corp, a manufacturer of argibusiness equipment, has signed a definitive merger agreement with holding company Berkshire Hathaway. Under the terms of the deal, CTB shareholders will receive US$12.75 per share in cash and CTB will become a wholly owned subsidiary of Berkshire. This means the total value of the transaction, including about US$40m of assumed debt, was about US$180m.