.10 Official Vaccination of Calves with Strain 19 Brucella Vaccine.

On and after July 1, 1976, the age for official vaccination of calves with Strain 19 Brucella Vaccine shall be as follows:

A. All heifers, regardless of breed--2 to 6 months (60 through 179 days) old;

B. Heifers vaccinated after July 1, 1976, older than 179 days will not be eligible for indemnity if found to be reactors on a blood test after the animal is 24 months old.