166D.7 - NONINFECTED HERDS.
166D.7 NONINFECTED HERDS.
In administering the pseudorabies eradication program, the
department shall regulate noninfected herds as follows:
1. A qualified negative herd must be certified, recertified, and
maintained as follows:
a. The herd shall be certified when all breeding swine have
reacted negatively to a test. The herd must have been free from
infection for thirty days prior to testing. At least ninety percent
of swine in the herd must have been on the premises as a part of the
herd for at least sixty days prior to testing, or swine in the herd
must have been moved or relocated directly from another qualified
negative herd. To remain certified, the herd must be retested and
recertified each month as provided by the department. The herd shall
be recertified when the greater of five head of swine or at least ten
percent of the herd's breeding swine react negatively to a test.
b. Before being added to the herd new swine including swine
returning to the herd after contact with nonherd swine, shall be
isolated until the new swine react negatively to a test conducted
thirty days or more after the swine has been placed in isolation.
Swine from a herd of unknown status must react negatively to a test
not more than thirty days prior to movement from the herd of unknown
status and retested in isolation at least thirty days after movement
onto the premises where the qualified negative herd is located.
c. Swine from another qualified negative herd may be added
without isolation or testing.
d. The owner shall make a request to the department for
approval or reapproval of a qualified negative herd when the required
tests are completed. Upon satisfactory proof that all requirements
have been met, the herd shall be recertified by the department.
2. A monitored herd shall be initially certified, recertified,
and maintained as follows:
a. The herd shall be certified when a statistical sampling of
the herd is determined to be noninfected.
b. In order to remain certified the herd must be retested and
recertified as provided by the department. The herd must be
recertified annually. The herd shall be recertified when a
statistical sampling of the herd is determined to be noninfected
within twelve months from initial certification or the most recent
recertification.
c. A monitored herd shall not be certified or recertified, if
the herd is located within a county which is designated by the
department as in stage II of the national pseudorabies eradication
program, unless the herd is vaccinated with a modified-live
differentiable vaccine pursuant to section 166D.11 and as required by
the department.
d. A monitored herd may receive new swine into the herd from
a noninfected herd.
3. A qualified differentiable negative herd shall be certified,
recertified, and maintained as follows:
a. The herd shall be certified when one hundred percent of
breeding swine have reacted negatively to a test. The herd must have
been free from infection for thirty days prior to testing. At least
ninety percent of swine in the herd must have been on the premises as
a part of the herd for at least sixty days prior to testing, or swine
in the herd must have been directly moved or relocated from a
qualified negative herd or qualified differentiable negative herd. A
differentiable vaccine must be administered at intervals in
accordance with the package insert for that vaccine. To remain
certified, the herd must be retested and recertified as provided by
the department. The herd shall be recertified when each month at
least ten percent of the herd's breeding swine react negatively to a
test.
b. Before adding to the herd new swine, including swine
returning to the herd after contact with nonherd swine, the herd
shall be isolated until the new swine react negatively to a test
conducted thirty days or more after the swine have been placed in
isolation. Swine from a herd of unknown status must react negatively
to a test not more than fifteen days prior to movement from the herd
of unknown status and retested in isolation at least thirty days
after movement onto the premises where the qualified differentiable
negative herd is located.
c. Swine from a qualified negative or qualified
differentiable negative herd may be added without isolation or
testing.
d. The owner shall make a request to the department for
certification or recertification of a qualified differentiable
negative herd when the required tests are completed. Upon
satisfactory proof that all requirements have been met, the herd
shall be recertified by the department. Section History: Recent Form
89 Acts, ch 280, §7; 90 Acts, ch 1091, § 5; 98 Acts, ch 1056, §4;
2000 Acts, ch 1110, §7--10, 25; 2000 Acts, ch 1232, §24, 39; 2002
Acts, ch 1119, §140; 2009 Acts, ch 133, §205
Referred to in § 166D.10