Wis. Stat. § 95.41: Tuberculin; ear tags.

(1) The department shall furnish and distribute tuberculin and circulars containing the rules and regulations for applying the tuberculin test upon application to all persons authorized to make such test.

(2) The department shall provide ear tags to be used for identifying cattle and farm-raised deer tested for purposes of disease control, and shall distribute the tags to persons authorized by the department to identify cattle and farm-raised deer.