What identification is given to calves after they are vaccinated for Brucella?

Calves vaccinated for Brucella are assigned an official identification ear tag and a vaccination tattoo as part of disease control and tracking measures. This identification serves several important purposes: it enables traceability of vaccinated animals, helps in management and monitoring of the vaccination program, and is crucial for preventing the spread of brucellosis. The ear tag provides a permanent method of identification, while the tattoo serves as a visual indicator that the animal has been vaccinated, which is essential for compliance with regulatory requirements and ensuring herd health.

While other options like microchip implants or health certificates may have their uses in various contexts, they are not the standard practices for identifying calves post-vaccination against Brucella. Electronic collars are not typically utilized for vaccination identification in calf management. Thus, the combination of the official identification ear tag and vaccination tattoo is the correct and widely accepted method for marking vaccinated calves.