Which of the following tags is NOT considered an official ID for swine?

In the context of official identification for swine, the key aspects that qualify an identification tag include its standardization and acceptance by regulatory bodies, such as the USDA. Tags that are considered official IDs typically have unique identification numbers and are made from materials and formats that ensure durability and traceability.

Color-coded stickers do not meet these criteria as they lack the standardized format and durability typically required for official livestock identification. They are more often used for temporary or informal identification purposes rather than being recognized as an official form of ID. By contrast, PIN tags, silver brite tags, and plastic swine tags are designed to provide a permanent, unique form of identification for swine, which is essential for tracking and management in various agricultural and regulatory settings. This makes them suitable for use as official livestock identification in accordance with USDA protocols.