This is an excellent article that answers many practical questions about BSE and the food industry.
http://msnbc.msn.com/Default.aspx?id=3802544&p1=0By Jon Bonné
MSNBC
Updated: 11:15 p.m. ET Dec. 28, 2003
But no federal regulation requires a quarantine of meat from questionable animals during testing. The meat can be released into the food supply; meat linked to the the diseased cow discovered in Washington has been traced to at least eight states. While many in the beef industry endorse a test-and-hold process, which would require a quarantine, not all processing facilities withhold the meat during testing. Neither the USDA nor Congress have proposed a requirement for test-and-hold procedures.
The Canadian cow found with mad cow disease this summer was a downer. Many big beef buyers will not accept meat from downed cattle, including McDonald's, Burger King, Wendy's and the federal school lunch program, which USDA administers. Producers often decide to reject downers, not only because it prohibits them from doing business with major customers, but also extra work is required to handle the heightened inspection process for downers. "They're a challenge to handle at the packing plant," said John Scanga, a meat safety expert at Colorado State University's meat science program. The Senate this year backed a move to ban downers from U.S. consumption. But the House turned down a similar measure in July, and final legislation did not include a provision to ban the meat. While the meat industry Dairy producers often rely on older cows, including downers, as an additional source of income.
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Mad cow concerns have also prompted renewed focus on an industry technique known as advanced meat recovery, in which machines are used to scrape or shave muscle tissue away from cattle bones, including the head and vertebrae. The process, which accounts for an estimated $150 million in revenue, has caused worry among regulators and safety advocates because of the recovered meat sits so close to neural tissue -- a cow's brain or spinal cord -- where the deformed proteins, or prions, that cause mad cow disease can be found.
A 2002 survey of producers using AMR techniques found that one in three meat samples was infected with neural tissue, notably bits of spinal cord. The industry disputes that figure, and the government began a more stringent inspection program this year. USDA has yet to issue new data, but the recent data actually shows an improvement from earlier in 2002, when three of every four AMR samples showed traces of contamination. The recovered meat usually is used in processed products, such as ground beef, taco fillings and meatballs. In addition to antemortem inspections, beef carcasses and recovered meat can be tested after slaughter.
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My comments: While the school lunch program doesn't accept "downers," it does accept meat acquired via the AMR technique, which, according to this article, in 3/4 cases is infected with brain and spinal bits. Parents need to DEMAND that no further meat acquired through the AMR technique be used for school lunches!