Division 3 The lean meat content of the carcase shall be calculated according to the following formula:
United Kingdom
ŷ = 64,4502 – 0,4364 × F + 0,0381 × M where:
ŷ F M
the estimated percentage of lean meat in the carcase,
the thickness of back fat (including rind), measured behind the last rib, 7 cm of the midline of the carcase (in millimetres),
the thickness of the muscle, measured behind the last rib, 7 cm of the midline of the carcase (in millimetres).
The formula shall be valid for carcases weighing between 60 and 110 kilograms.