Good Morning Lorraine, We have 4 cage card types (USDA/Procurement Card, Breeder Card, Weanling Card, and Blank Card). We use both, RFID & Barcodes, on the cards - RFID for census and location, Barcodes for Vet Care, etc. Our Cards contain three sections - an activation tear-off strip, a deactivation tear-off strip, and then the body of the card.
For the weaned cages - we provide preprinted, but inactivated, cards to the Researchers. They are kept in shielded bags, which are stored in shielded cabinets within the rooms. As cards are needed for weaning, they pull cards from cabinet... write the number of animals weaned on the activation strip and remove the activation strip... then place the remainder of the card in the cage card holder. When they have completed all weaning activities, they place the activation strips in a collection box in the hallway. We empty the collection boxes every morning at 7am, activating the cards for the previous day.
I've attached an image of the card design that we use. The diagonal lines on the back just represent where the modified metal cage card holders are positioned in relation to the RFID tag.
Looking at the card, there was actually a revision made. We put the barcode, by itself, on the body - just in case it was ever separated from the deactivation strip but left on a cage.
The Blank Cards are used by researchers who wish to run the card through a laser printer to add their own "worksheet" for recording research data onto the card.
The Breeder cards are Green - so they stand out as Breeder cages.
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