http://uk.reuters.com/article/consumerproducts-SP/idUKN2032797520080520

“Cattle too sick or injured to walk will be banned from entering U.S. slaughterhouses, the Agriculture Department said on Tuesday, a change that comes months after the largest meat recall in American history.
Currently most downer cattle are banned from slaughter, but USDA rules allow some animals to go through if they have passed inspection earlier. Packers are required to alert USDA veterinarians in those cases so the cattle can be reinspected before they are slaughtered for food.”