jessies_mom
Posted : 4/20/2007 8:16:46 AM
[link
http://www.pittsburghlive.com/x/pittsburghtrib/news/s_503671.html]http://www.pittsburghlive.com/x/pittsburghtrib/news/s_503671.html[/link];
Researchers also have identified three other contaminants in the urine and kidneys of animals sickened or killed after eating the recalled foods, including cyanuric acid, a chemical commonly used in pool chlorination, three researchers told the Pittsburgh Tribune-Review.
Cyanuric acid is what most likely sickened pets, one researcher said.
Yesterday, the urine of some pigs at the 1,500-animal American Hog Farm in Ceres, Calif., tested positive for melamine, although all appeared healthy, Lungren said. About half a dozen pigs were put down and researchers at the University of California-Davis are testing their kidneys, tissues, blood and other body parts for melamine contamination, she said.
The contaminated feed was bought April 3 and 13 as
salvage pet
food from Diamond Pet Foods Inc., which received contaminated rice protein concentrate used in some recalled Natural Balance after melamine was found in an ingredient, rice protein concentrate.
Researchers in at least three labs found cyanuric acid, amilorine and amiloride -- all by-products of melamine -- in the crystals of animals' urine, tissues and kidneys, according to Dr. Brent Hoff, a veterinarian and clinical toxicologist and pathologist, at the University of Guelph, in Ontario, Canada; Richard Goldstein, associate professor of medicine at Cornell University's College of Veterinary Medicine and a kidney specialist, and Dr. Thomas Mullaney, acting director of Michigan State University's Center for Population and Animal Health.
Finding cyanuric acid is the more significant finding, Hoff, Goldstein and Mullaney said, although they are not yet certain how toxic it is to animals.
The Centers for Disease Control and Prevention's Web site said, "When ingested (by humans) in large amounts, the substance may have effects on the kidneys, resulting in tissue lesions."
Because cyanuric acid was used in pool chlorination, more scientific studies have been done on that chemical than on melamine, amilorine and amiloride, Goldstein said. However, tests in dogs and rats found it is safe, he said.
Salvage pet food?; What else are they feeding to hogs, and did Diamond know there was melamine in the food when they sold it to the hog farmers?