Leonard Green & Partners is supporting the $251 million acquisition of Animal Health International (NASDAQ: AHII) by Lextron. Lextron has agreed to acquire AHI for $111 million plus the repayment of AHI's outstanding indebtedness. AHI shareholders will receive $4.25 per share of common stock, which represents an 11% premium. Charlesbank Capital Partners, which acquired the company in a 2005 buyout and still holds a minority stake, has agreed to vote in favor of the transaction. AHI distributes animal health products.