What is an example of a physical tag used for swine identification?

Silver brite tags or plastic swine tags are recognized as physical tags for swine identification because they are tangible labels that can be affixed to the animals, providing a clear means of tracking and identifying individual animals within a herd. These tags typically contain information such as identification numbers, which may correspond to an animal's birth date, lineage, or health history.

Physical tagging is essential in managing swine populations as it allows producers to maintain accurate records and ensure proper animal management practices, including monitoring health, breeding, and growth rates. The use of such tags aids in biosecurity and traceability, which are critical in agricultural operations to prevent disease spread and maintain market standards.

Other options like fur color or pattern, weight labels or nutritional tags, and temperature stickers or health records do not serve as adequate physical identification methods for swine in the same way. While these may provide useful information about an animal's characteristics or condition, they do not function as direct, permanent identification methods like the physical tags do.