Division 3 The lean meat content of the carcase shall be calculated according to the following formula:
United Kingdom
UFOM = 64,436 + 0,073 × M – 0,742 × F
where:
the estimated lean meat content in the carcase (in percentage),
the thickness of muscle measured between the second and third last ribs, 70 mm beside the mid-line of the split carcase (in millimetres),
the thickness of fat (including rind), measured in the same point as the thickness of muscle (in millimetres).
This formula shall be valid for carcases weighing between 60 and 120 kilograms.