date:Jun 21, 2016
ations of the Federal Food, Drug and Cosmetic Act.
The letter stated that a Cherne Angus cow was sold for slaughter as food on or about Feb. 22, 2016, and that analysis of tissue samples from this animal identified the presence of 3.91 parts per million (ppm) of Desfuroylceftiofur, a marker residue of certain drugs used to treat bacterial respiratory diseases in cattle and swine.
Since FDA has established a tolerance of 0.4 ppm for residues of Desfuroycleftiofur in the edible tissues of cattle