Official eartag.

Official eartag. An identification tag providing unique identification for individual animals. An official eartag which contains or displays an AIN with an 840 prefix must bear the U.S. shield. The design, size, shape, color, and other characteristics of the official eartag will depend on the needs of the users, subject to the approval of the Administrator. The official eartag must be tamper-resistant and have a high retention rate in the animal. Official eartags must adhere to one of the following numbering systems:
(1) National Uniform Eartagging System.
(2) Animal identification number (AIN).
(3) Premises-based number system. The premises-based number system combines an official premises identification number (PIN), as defined in this section, with a producer's livestock production numbering system to provide a unique identification number. The PIN and the production number must both appear on the official tag.
(4) Any other numbering system approved by the Administrator for the identification of animals in commerce.

Source

9 CFR § 79.1

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Scoping language

Accredited veterinarian. A veterinarian approved by the Administrator in accordance with part 161 of this chapter to perform functions specified in subchapters B, C, and D of this chapter.

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