FSIS reported that during routine ante-mortem and post-mortem examinations of young cattle in March 2004 it discovered growth-promoting drug implants in calves presented for slaughter. Further investigation revealed that the practice was widespread in the veal industry, even though the drugs had not been approved and are therefore illegal to use. USDA considers use of the drug implants a violation of the Federal Food, Drug and Cosmetic Act.

In April, FSIS instructed meat inspectors to be alert for non-ruminating calves with growth implants and to remove them from the food supply. In July, it sent a letter to the American Veal Industry and other trade associations advising them that use of unapproved implants is illegal.

FSIS inspectors are being charged with notifying all slaughterers of young calves of the new requirements in advance of their deadline for filing updated HAACP plans.