With a Body Condition Score (BCS) visual scale from 1 to 5, you should breed your sows at a BCS of 2.5 to 3.0 and farrow sows at a BCS of 3.0 to 3.5. However, Choice additionally recommends measuring backfat at the P2 location (at the last rib and 2 inches [5 cm] below the spine) with a device such as a Renco Lean-Meater to determine the BCS. This is the ideal way to determine a sows BCS. Choice recommends 13 to 16 mm of backfat at breeding and 16 to 18 mm at farrowing.