OHIO MATTRESS <OMT> MAY HAVE LOWER 1ST QTR NET Ohio Mattress Co said its first quarter, ending February 28, profits may be below the 2.4 mln dlrs, or 15 cts a share, earned in the first quarter of fiscal 1986. The company said any decline would be due to expenses related to the acquisitions in the middle of the current quarter of seven licensees of Sealy Inc, as well as 82 pct of the outstanding capital stock of Sealy. Because of these acquisitions, it said, first quarter sales will be substantially higher than last year's 67.1 mln dlrs. Noting that it typically reports first quarter results in late march, said the report is likely to be issued in early April this year. It said the delay is due to administrative considerations, including conducting appraisals, in connection with the acquisitions.