Oh shit.

"Feed sellers in China routinely use protein substitute" is a headline that Spocko at Spocko's Brain caught before the article was pulled.

"....The pet food case is also putting China's agricultural exports under greater scrutiny because the country's dubious food safety record and history of excessive antibiotic and pesticide use.

In recent years, for instance, China's food safety scandals have involved everything from fake baby milk formulas and soy sauce made from human hair, to instances where cuttlefish were soaked in calligraphy ink to improve their color and eels were fed contraceptive pills to make them grow long and slim.

China's government disputes any suggestion that melamine from the country could have killed pets. But Friday, regulators here banned the use of melamine in vegetable proteins made for export or for use in domestic food supplies.

Yet it is clear from visiting this region of northern China is that for years melamine has been quietly mixed into Chinese animal feed and then sold to unsuspecting farmers as protein-rich pig, poultry and fish feed.

Many animal feed operators advertise on the Internet seeking to purchase melamine scrap. And melamine scrap producers and traders said in recent interviews that they often sell to animal feed makers.

"Many companies buy melamine scrap to make animal feed, such as fish feed," says Ji Denghui, general manager of the Fujian Sanming Dinghui Chemical Company. "I don't know if there's a regulation on it. Probably not. No law or regulation says 'don't do it,' so everyone's doing it. The laws in China are like that, aren't they? If there's no accident, there won't be any regulation."

Tell me again what exactly have we been eating that has come from China?