The mildly toxic chemical melamine is commonly added to animal feed in China, a manager of a feed company and one of the chemical’s producers said on Monday, describing a process that fraudulently boosts the feed’s sales value but risks introducing the chemical into meat eaten by humans.
Customers either don’t know or aren’t concerned about the practice, said Wang Jianhui, manager of the Kaiyuan Protein Feed company in the northern city of Shijiazhuang.
”We’ve been running the melamine feed business for about 15 years and receiving positive responses from our customers,” Wang said in a telephone interview. ”Using the proper quantity of melamine will not harm the animals. Our products are very safe, for sure.”
Although apparently widely practised in China, melamine use sparked concern only in March, after the United States recall of nearly 100 brands of pet food made with wheat gluten contaminated by the chemical. Adding melamine to food is illegal under American law, and China’s government last week said it was banning its use in food products.
Dry cat and dog food tainted with melamine was also recalled in South Africa.
Melamine has no nutritional value but because it is nitrogen rich, it raises the nitrogen level of feed, making it appear that the feed is higher in protein without increasing its nutritional value. That makes it attractive to makers of feed for stock animals such as pigs, chickens and fish, as well as companies that make prepared foods for household pets such as cats and dogs.
Despite Wang’s claim of safety, pet food tainted with melamine apparently has resulted in kidney failure in an unknown number of cats and other animals across the US and in South Africa.
Some pet food was also shipped to hog farms in several states for use as feed and was later discovered to have another ingredient, rice-protein concentrate, imported from China that was also tainted with melamine. Thousands of US hogs that were fed contaminated feed were being destroyed to prevent adulterated meat from reaching consumers.
The US Food and Drug Administration (FDA) has blocked wheat and rice gluten from Xuzhou Anying Biologic Technology Development Company and Binzhou Futian Bio-Technology Company after melamine was found in samples taken from batches used to make pet food.
China’s government has said it will allow officials from the FDA to investigate melamine contamination.
Melamine is not considered a human health concern, but there is no scientific data on the health effects of melamine combined with the other compounds. Made from coal, the chemical is usually used in the making of plastics or fertiliser.
”A lot of animal food companies buy melamine from us to add in the animal feed,” said Ji Denghui, manager of Sanming Dinghui Chemical Trading Company based in the eastern province of Fujian. ”This can lower the production cost and increase nitrogen levels.”
Xuzhou Anying was found to have posted an advertisement on the website of online market place 999ce.com in March seeking to buy melamine. Other online searches for companies seeking to buy melamine were linked to companies in the chemical industry.
Xuzhou Anying’s ad did not say what it intended to use the melamine for and managers have said they don’t know how melamine came to be in the contaminated wheat gluten, which it claims to have purchased from another supplier.
However, Ji of Dinghui Chemical said the practice is not considered illegal and downplayed the risk.
”As far as I know, there are no rules of regulations that make this illegal. As to whether melamine is toxic or not, I believe it won’t do any harm if there is only a very small amount,” Ji said. ”Otherwise, those companies could not do that.”
Calls to China’s food safety regulator, the State Administration of Quality Supervision, Inspection and Quarantine, rang unanswered on Monday afternoon.
The discovery of tainted animal feed was merely the latest revelation about China’s food-safety woes, ranging from dye-tainted fish and fake baby formula to the alleged use of ingredients intended for animal consumption to make snack foods. — Sapa-AP