Guernseys for Feet and Legs?

I attended a training course today at one of the Agricultural Colleges which has a 300 cow Holstein herd, to learn about Lameness Scoring which some of the Supermarkets have now made a condition of supply. The scoring system has been developed by DEFRA/ADAS and Bristol University and uses the scores:

0  Normal Locomotion, long fluid strides with a flat back.

1  Could benefit from Routine Foot Trimming,

2  Uneven weight bearing, with an arch to the back.

3  Unable to walk at a brisk pace.