Advanced meat recovery

USDA regulations for procurement of frozen fresh ground beef products state that "Beef that is mechanically separated from bone with automatic deboning systems, advanced lean (meat) recovery (AMR) systems or powered knives, will not be allowed".

Products that exceed the calcium content limit must instead be labeled "mechanically separated beef or pork" in the ingredients statement.

Following the identification of a BSE-infected U.S. dairy cow in December 2003, FSIS issued new regulations expanding the definition of prohibited CNS tissue to include additional cattle parts.

to treat the meat, this appears to be due to confusion between AMR and the production of lean finely textured beef (LFTB, commonly referred to as pink slime).

[citation needed] LFTB is in fact treated with ammonia,[7] and so is substantially more restricted than most AMR products.

As a result, many of the regulations governing conventional (high-pressure, paste) MSM/MRM applies, including the 2004 ban on MSM produced from ruminants.