OCV... Offically Calfhood Vaccinated
Vaccinated as 4 to 10 month old heifers with Brucella Abortus Strain RB 51...
Calfhood vaccination must be administered by a federally accredited veterinarian. Most large animal veterinarians are federally accredited.
Vaccination is necessary for heifers being shipped into some states; therefore, many sales require that all heifers sold be calfhood vaccinated so as not to restrict the potential market.
Official calfhood vaccinates are marked in the right ear with an official orange ear tag and a special tattoo, denoting the quarter and year of vaccination.
The decision to have heifer calves vaccinated for brucellosis should be based on the advice of the herd's veterinarian and depends on the marketing plan of the herd.