Two dairy farms in St. Lawrence County were issued warning letters by the Food and Drug Administration earlier in the year.
The warnings were revealed last week on the FDA website.
The Adon farm in Potsdam was inspected in April and a
warning letter was issued in August. The FDA said the farm offered an animal for slaughter that exceeded the tolerance for residues of penicillin.
The Lloyd Smith & Sons farm in Canton was inspected in June and a
warning letter was sent in September.
The FDA said that farm sold a dairy cow for slaughter that had penicillin levels almost three times higher than allowed.
Both operators were criticized for inadequate record keeping.
