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Rumor: Imported Chinese tilapia are often raised on feces

By Curtis Cartier of MSN News

Small farms, high demands and lax oversight are inspiring fish farmers in China and Southeast Asia to feed their fish, especially tilapia, with animal feces.


In many cases, fish farmed in Asia and imported to the US have been raised on diets of chicken and pig feces

Tilapia is a flat, white fish that comes in nearly a hundred different species, is cheap to raise, easy to cook and recently became the fourth most-commonly consumed fish in the United States, behind shrimp, tuna and salmon. About 82 percent of the United States' tilapia comes from China, according to USDA documents. But a simple online search of the subject reveals numerous alarming accusations involving Asian fish -- particularly tilapia -- being raised on diets of animal manure, and thus turning into magnets for food-borne illness. MSN News spoke with a leading food-safety scientist who said that, in fact, Chinese tilapia's reputation for being unsafe to eat is quite well-deserved.

"While there are some really good aquaculture ponds in Asia, in many of these ponds -- or really in most of these ponds -- it's typical to use untreated chicken manure as the primary nutrition," Michael Doyle, director of the Center for Food Safety at the University of Georgia said. "In some places, like Thailand for example, they will just put the chickens over the pond and they just poop right in the pond."

Asked to estimate what percentage of Chinese tilapia are raised using animal feces as food, Doyle said "I'd say roughly 50 percent."

Feeding fish animal feces makes them highly susceptible to bacterial infections like salmonella and E.coli, Doyle said. Furthermore, he said that the large amount of antibiotics that are given to the fish to ward off infections makes the strains of salmonella and E.coli that the fish do catch extremely hard to eliminate.

"It's incredible to see how much of these antibiotics are applied, and they leave large residues of antibiotics in the ponds," Doyle said. "We have multiple antibiotic-resistant strains of salmonella coming in with these fish."

Farmed fish now more common than farmed beef

Last month it was announced that farmed fish had overtaken farmed beef in terms of worldwide production for the first time in recorded history. This watershed moment for human food consumption was made possible by a vast network of fish-farming operations that allow enormous quantities of seafood to be raised in a minimal area and with minimal resources.

According to reports, in China and other Asian countries like Vietnam and Thailand, intense demand for farmed fish and cutthroat competition among farmers drives many of these farmers to cut corners. Feeding the fish with pig and chicken feces is much cheaper than using standard fish food.

An explosive Bloomberg News story published in October of last year and headlined "Asian Seafood Raised on Pig Feces Approved for U.S. Consumers" revealed in graphic detail fish farms and packing plants in China and Vietnam that are rife with filth and disease, and U.S. inspectors doing what appeared to be a poor job of stopping the tainted fish from entering the food supply. According to the piece, 27 percent of seafood consumed in in the United States comes from China, and yet the FDA only inspects 2.7 percent of the fish that gets imported. Of the fish inspected, the FDA has reportedly rejected 820 Chinese seafood shipments since 2007, including 187 that contained tilapia.

FDA defends inspections

In response to questions from MSN News about imported Asian seafood, the FDA defended its practices in an emailed statement, which reads as follows:

"The FDAs priority is to ensure that both domestic and imported seafood sold in the United States is safe. The agency uses a multifaceted and risk-informed seafood safety program that relies on various measures of compliance. For imported seafood, these measures include inspecting foreign processing facilities, sampling seafood offered for import into the United States, domestic surveillance sampling of imported products, inspections of seafood importers, evaluations of filers of seafood products, foreign country program assessments, and information shared from our international partners and FDA overseas offices."

"Seafood processors and aquaculture farmers are required to have controls in place to keep hazards out of seafood. The FDA conducts targeted risk-based testing, taking action when it finds violations."

Despite the FDA's assurances, Doyle said he recommends consumers pay attention to the country of origin of their seafood, which grocery stores are required by law to display.

"Personally, I always stick to seafood that's caught in the Gulf of Mexico," Doyle said.

UPDATE: Pressed for more details on whether seafood imported from Asia receives, or deserves to receive, more scrutiny than seafood from other regions, FDA spokesperson Theresa Eisenman flatly denied that the widespread practice of feeding feces to farmed fish occurs.

"We are not aware of evidence to support the claim that this practice is occurring in China," Eisenman wrote to MSN News. "Both domestic and imported seafood products are required to meet the same food safety standards. If FDA had information that an aquaculture product was raised in a manner that would violate FDAs food safety requirements, that product would not be allowed entry into the United States."

Eisenman wrote that as far as her agency is concerned, the only food-safety issue specific to Chinese seafood has been the types and levels of antibiotics used on the fish. An official FDA "Import Alert" was issued on June 27, 2013, that names China as having frequently used potentially carcinogenic antibiotics on its fish farms. The alert vows that the agency will stop any shipments of fish that contain antibiotics like malachite green, nitrofurans, fluoroquinolones, and gentian violet.


MSN News seeks to give up-to-date information on rumors related to current events, people or even topics/issues of interest. Well tell you what we can confirm from the rumor mill -- and what we cant. If we cant confirm a rumor, well share what we do know about it.

If you have a rumor youd like to submit for review, email: msnnewsrumors@microsoft.com


Vietnam ships 100 million pounds of shrimp a year to the U.S. Thats almost 8 percent of the shrimp Americans eat.

Shrimp farmers in Ca Mau province in Vietnam, use ice made from tap water that the government says isn't safe to drink without boiling it, Sept 10, 2012.

About 27 percent of the seafood Americans eat comes from China -- and the shipments that the FDA checks are frequently contaminated, the FDA has found. The agency inspects only about 2.7 percent of imported food. Of that, FDA inspectors have rejected 1,380 loads of seafood from Vietnam since 2007 for filth and salmonella, including 81 from Ngoc Sinh, agency records show. The FDA has rejected 820 Chinese seafood shipments since 2007, including 187 that contained tilapia.

Aquacultured (farm-raised) seafood has become the fastest growing sector of the world food economy and accounts for nearly half of all seafood production worldwide. About 80% of the seafood consumed in the U.S. is imported from approximately 62 countries and over 40% is aquacultured seafood. As the aquaculture industry continues to grow and compete with wild-caught seafood products, concerns regarding the use of prohibited animal drugs and unsafe chemicals and the misuse of animal drugs in aquaculture operations have increased substantially. (US Food and Drug Administration, 2007b.).

The use and misuse of antibiotics in food increased around 2001, when testing in the European Union revealed the use of chloramphenicol (a prohibited antibiotic) in a number of food products, including seafood from several Asian countries. Thereafter, Canada and the United States similarly found chloramphenicol in some shipments of imported seafood and other food. (Collette, 2006) While the U.S. has tested farm-raised shrimp for chloramphenicol since 1994, once the violation records of the E.U. and Canada became known, the US Food and Drug Administration (FDA) developed more sensitive testing methodology and moved its levels of detection for chloramphenicol from 5.0 ppb to 1.0 ppb and finally its current detection level of 0.3 ppb. (Keyes, 2006) The FDA testing program for aquaculture drugs was revised and reissued in November 2005. The testing program includes antibiotics such as chloramphenicol, nitrofurans, fluoroquinolones, and quinolones, as well as nonantibiotic drugs like malachite green and ivermectin that are not approved for use in aquaculture fish. (Collette, 2006)

In the United States, use of malachite green, nitrofurans, fluoroquinolones, or gentian violet as drugs in aquacultured animals is illegal under Section 512 of the Federal Food, Drug, and Cosmetic Act (FFDCA). And presence of their residues in seafood adulterates the seafood under 402(a)(2)(C)(ii) of the FFDCA. (US Food and Drug Administration, 2007b.) Also, malachite green, nitrofurans, fluoroquinolones and gentian violet are not generally recognized as safe under any conditions of intended use that may reasonably be expected to result in their becoming a component of food. Therefore, if these drugs are intended for any such use, they are unsafe food additives within the meaning of section 409 of the FDCA and would render the food adulterated under section 402(a)(2)(C)(i). (US Food and Drug Administration, 2007b.)

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