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FDA warning letters: Drug residues in dairy cows
date:Jul 19, 2016
iry operation on April 26, 28 and May 4.

A culled dairy cow sold for slaughter as food on or about July 28, 2015, was found to have desfuroylceftiofur (a marker residue for ceftiofur) at 5.48 ppm in the kidney tissue, the letter stated, although the FDA tolerance level for residues of that drug in cattle kidney tissue is 0.4 ppm.

Further, the agency stated that the dairy failed to maintain treatment records and that expired animal drugs were found on-site. Food from animals held under such con

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