Those details should be left to companies like Creekstone, BMR. You should not be afraid of those details or the fear mongering around them. If Creekstone could have made it work, don't you think it would have been copied? Innovation often is, to the betterment of us all.
Here are just a few scenarios:
1) Creekstone finds the methods that work best for them.
2) Producers themselves find those scenarios--maybe testing their whole herd every 3 years or something like that, whatever seems to work.
3) Feeders find a scenario that works. Most cattle are on feed before they go to the slaughter houses. Why not test them there?
4) Small packing plants find other innovative ways to test for food safety. The market rewards those systems, and the small packers can compete more fiercely for the cattle you sell.
5) Whole areas or regions are tested and determined to be bse free with carefull attention to cattle being brought in to maintain the herd safety (Isn't that the deal with country bse schemes?)
These dynamics are for the market to figure out. So what if the big packers don't control food safety, they are falling behind on that issue now. They can not be trusted in that regard. Why do you think the govt. is involved in the first place?