An owner shall not sell or transfer ownership of a designated animal, allow the commingling of designated animals belonging to two or more owners, or allow the commingling of designated animals with other designated animals under feeder quarantine on a state-approved premises, unless the commingled designated animals are accompanied by a negative brucellosis test report issued by a veterinarian, conducted within thirty days. The provisions of this section do not apply to the following:

1. 1. Bovine animals under six months of age, spayed heifers, or steers.
2. 2. Official vaccinates of bovine animals other than dairy cattle under twenty-four months of age or dairy cattle under twenty months of age, if not postparturient.
3. 3. Designated animals which are consigned directly to slaughter.

4. 4. Designated animals which are imported for exhibition purposes, if any of the following apply:

   1. a. When under the test-eligible ages as provided by the department for designated animals other than bovine. For bovine the test-eligible ages are as provided in this section. The designated animal must be accompanied by an official vaccination certificate as provided by the department. A bovine animal which is six months or older must be accompanied with a vaccination certificate.
   2. b. Designated animals of any age when accompanied by a report of a negative brucellosis test conducted within thirty days.
   3. c. Designated animals originating from a herd in a class free state or designated animals from a brucellosis-free herd.
5. 5. Designated animals originating from a herd in a class free state or designated animals from a certified brucellosis-free herd.
6. 6. Designated animals moved to a state-approved premises.

[C54, 58, 62, §164.11; C66, 71, 73, 75, 77, 79, 81, §164.13] 86 Acts, ch 1036, §7; 97 Acts, ch 124, §13