Lowering the amount of antibiotics used in darying can only result from keeping animals healthy. Using antibiotic foot baths to control lameness in cows is known to significantly raise the mg/ml rate when measuring on farm use. Plus, what happens to the antibiotics in the footbath once discarded into the environment?
We are beginning to see some great results at Pruex from using probiotics to clean feet. Cows exiting their milking platforms simply walk through a foam of probiotic bacteria (AHC - Animal Hoof/House Cleaner).