I was interested in reading Cliff Saran's story about IBM working with the Norwegian company Nortura and its IT subsidiary Matiq to track chickens from farms to supermarket shelves.
What's interesting about it is the proposed use of EPCIS, EPCglobal's Electronic Product Code Information Services (EPCIS) standard, which allows the sharing of RFID data across and between enterprises.
You can read Cliff's story here. I think the key point is that there has been little use in anger so far of EPCIS, though admittedly, it is still pretty early days for organisations in understanding how to use the standard.
Galeria Kaufhof, part of the Metro Group in Germany has been trialling it, but the number of live sites is pretty small. I'd bet that this is a good showcase example for IBM of what can be achieved through EPCIS, but it would be some way from full implementation yet.