Louisiana Administrative Code
Title 7 - AGRICULTURE AND ANIMALS
Part XXI - Animals and Animal Health
Chapter 7 - Cattle, Bison, and other Bovine (Formerly Chapter 3)
Subchapter B - Brucellosis Regulations
Section XXI-725 - Establishing the Official Tests for Brucellosis in Cattle (Formerly Section 321)
Universal Citation: LA Admin Code XXI-725
Current through Register Vol. 50, No. 3, March 20, 2024
A. Screening Test
1. Milk Ring Test (BRT). This
test is conducted by the state-federal laboratory on a composite sample of milk
collected at dairy farms. A follow-up individual serological test shall be
conducted on all cattle represented in a composite sample which reacts to the
test.
a. A commercial dairy herd that has
passed four consecutive, negative milk ring tests within the last 12 months,
the tests being no less than two months or more than four months apart, will be
considered a negative herd and will not be required to be blood tested as long
as the herd continues to have milk ring tests four times each year, the tests
being no less than two months or more than four months apart, and the results
of the tests remain negative.
b. A
commercial dairy herd showing a positive milk ring test will be considered
Brucellosis infected and will be quarantined and blood tested.
The Brucellosis status of the herd will then be determined by
the results of the blood test which shall be conducted within 30 days of
official notification.
2. Card Test. This test will be used by
approved personnel to classify cattle negative on surveillance samples
collected at slaughter or at livestock auction markets on routine samples
collected on farms and on tests of suspicious and infected herds. Positive
samples from Brucellosis vaccinated animals will be given
supplemental testing when possible to aid in classification of cattle as
reactors.
B. Supplemental Tests
1. Standard Plate
Agglutination Test. This test may classify as negative, suspect or
reactors.
2. Rivanol Test. This
test may classify cattle as negative or reactor.
3. Complement Fixation Test. This test may
classify cattle as negative, suspect or reactor.
4. Particle Concentration Fluorescence
Immunoassay Test (PCFlA). This test may classify as negative, suspect, or
reactor.
5. Concentration
Immunoassay Technology Test (CITE). This test may classify as negative or
reactor.
6. Any test officially
approved by the USDA and recommended by the state veterinarian and the
designated epidemiologist.
AUTHORITY NOTE: Promulgated in accordance with R.S. 3:2221 and R.S. 3:2093.
Disclaimer: These regulations may not be the most recent version. Louisiana may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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