A food source information transferring system for a livestock slaughterhouse and a related method are disclosed. In one embodiment, the food source information transferring system is capable of reading first tag-identifying information in a livestock RFID tag on a body of a carcass and second tag-identifying information in a hook RFID tag incorporated in a hook that can be hung on a hook machine. A food source information database can pair a first set of data associated with the livestock RFID tag with a second set of data associated with the hook RFID tag to preserve producer-level livestock information to meat-processing, distribution, and sales channels. This unique pairing of the first set of data associated with the livestock RFID tag and the second set of data associated with the hook RFID tag in the food source information database can result in seamless, robust, and lossless food source information management.