FDA: Millions of Chickens Fed Contaminated Pet Food

TUESDAY, May 1 (HealthDay News) -- Up to 3 million broiler chickens were fed melamine-tainted pet food and then sold on the U.S. market beginning in early February, U.S. health officials said in a press conference held late Tuesday.

The contaminated pet product made its way into poultry feed at 38 Indiana farms, 30 of which produced broiler chickens destined for restaurants and supermarkets, said officials at the U.S. Food and Drug Administration and the U.S. Department of Agriculture.

Approximately 2.5 million to 3 million chickens fed contaminated pet food have already been sold, Kenneth Peterson, assistant administrator for field operations at the USDA's Food Safety and Inspection Service, said during the teleconference. "That's out of a total of 9 billion broilers processed in the U.S. each year," he noted.

Experts from both agencies downplayed any potential threat to human health.

"We still have no evidence of harm to humans or to swine" from the use of the tainted pet product, said Dr. David Acheson, who began his tenure as the FDA's new assistant commissioner for food protection on Tuesday. Acheson said that the contaminated food constituted only about 5 percent of the total feed at the farms. "The risk to humans is small," he said.

Peterson added that some 100,000 breeder chickens are being held in quarantine at some of the Indiana farms. Those chickens have been quarantined and may be euthanized, the FDA and USDA said. The agencies also warned in a statement issued late Monday that "as the investigation continues, additional farms will likely be identified that received contaminated feed."

The announcement comes on the heels of similar discoveries at hog farms across the United States. The USDA first announced on Thursday that meat from 345 hogs suspected of eating the contaminated feed had entered the U.S. food supply. Some 6,000 hogs suspected of eating the contaminated product have since been quarantined and meat from these animals will be withheld from the food supply, both agencies said.

"As with exposure from hogs fed contaminated pet food and for similar reasons related to the dilution of the contamination, FDA and USDA believe the likelihood of illness after eating chicken fed the contaminated product is very low," the agencies said Monday night. "Because there is no evidence of harm to humans associated with consumption of chicken fed the contaminated product, no recall of poultry products processed from these animals is being issued."

In a similar vein, U.S. health officials have continued to reassure American consumers that pork products from hogs fed contaminated pet food were safe, even as reports surfaced that China has routinely added the contaminant melamine to its exported animal food supplements.

In a joint statement issued late Saturday, the FDA and USDA stressed that, "We are not aware of any human illness that has occurred from exposure to melamine or its byproducts." They added that they have also identified no illnesses in swine fed the salvage food tainted by melamine, which was imported from China as an additive to wheat gluten used in dog and cat food.

Melamine, a derivative of coal, is at the center of the United States' largest pet food recall, involving more than 60 million packages of 100 name-brand products. The chemical has been linked to the deaths of at least 16 pets and the illness of possibly thousands of animals.

In the Saturday statement, the FDA and the USDA said the possibility of human illness from eating swine exposed to melamine remains low for several reasons: "First, it is a partial ingredient in the pet food; second, it is only part of the total feed given to the hogs; third, it is not known to accumulate in the hogs, and the hogs excrete melamine in their urine; fourth, even if present in pork, pork is only a small part of the average American diet."