PURPOSE: This rule delineates the procedures for quarantine release of brucellosis infected herds.

1. (1) Definitions.

   1. (A) Herd shall mean all cattle (genus Bos), bison, including calves under common ownership or supervision, whether geographically separated or not, except steers and spayed heifers.

   2. (B) Whole Herd Vaccination. Vaccination of all female cattle except spayed heifers over eight (8) months of age with a brucellosis vaccine approved by the state veterinarian. Such cattle shall be identified as official adult vaccinates by an adult vaccination tag and tattoo.

      1. 1. Heifer calves eight (8) months of age

and under that are not spayed, are to be vaccinated with a brucellosis vaccine approved by the state veterinarian.

1. 2. The testing of the herd may resume

within thirty (30) days after vaccine is administered. The test schedule shall be consistent with the schedule used in non-vaccinated herds. 2 CSR 30-3

1. (C) Individual herd plans shall mean an approved brucellosis control program of the herd under quarantine for the purpose of eliminating brucellosis from the herd, preventing spread to other herds and preventing reintroduction after the herd has become free of brucellosis. The individual herd plan shall be developed by the herd owner, the owner’s veterinarian, if requested by the owner, and the district veterinarian. The individual herd plan shall be reviewed by the state veterinarian or his/her designated representative and must be adhered to in order to be eligible for indemnity payments.
2. (D) Contact/adjacent herds shall mean herds sharing common premises, herds within one (1) mile or epidemiologically traced herds.

1. (2) Requirements for Herd Quarantine Release.

   1. (A) Complete Depopulation.

      1. 1. All reactors tagged and “B”-branded,

and slaughtered on a VS 1-27 shipping permit (see 2 CSR 30-2.010).

1. 2. All other cattle “S”-branded and

slaughtered, or “S”-branded and moved to a state-/federal-approved quarantined feedlot under permit except steers and spayed heifers.

1. (B) Minimum Requirements of the Individual Herd Plan.

   1. 1. Three (3) consecutive negative herd

tests. All quarantined test-eligible cattle presented for test with the first test not fewer than thirty (30) days after removal of all reactors, the second test to be not fewer than one hundred twenty (120) days after removal of all reactors, the third negative test to be not fewer than three hundred (300) days after removal of all reactors. The herd owner is encouraged to test at more frequent intervals.

1. 2. All calves in infected herds will

remain under quarantine until—

1. A. Bull calves are castrated;
2. B. Heifers are spayed and identified

by a hot iron brand on either jaw or official pink eartag or both;

1. C. Calves are “S”-branded and

tagged and shipped to a state-/federal-quarantined feedlot or to slaughter on permit;

1. D. Heifer calves on reactors not

spayed may be tagged and branded, and slaughtered on permit with indemnity;

1. E. Bull calves not castrated must be

isolated for at least one hundred twenty (120) days and tested negative; and

1. F. Heifer calves from negative cows

not spayed must be isolated, and tested, and negative between fifteen and forty-five (15— 45) days after first calving.

1. 3. All contact/adjacent exposed herds

shall be placed under quarantine within fifteen (15) days for a complete herd test and may involve testing up to the level of a quarantined herd. Contact/adjacent herds shall be tested within one hundred twenty (120) days after the affected herd is released from quarantine.

1. 4. Individual herd management plan

requirements shall be met except when a designated brucellosis epidemiologist authorizes the modifications of the plan consistent with sound brucellosis eradication principles. Testing, tagging and branding may be rendered without expense to the owner, however, owners are to provide for handling of their cattle.

AUTHORITY: section 267.645, RSMo 2000.* Original rule filed Dec. 19, 1975, effective Dec. 29, 1975. Amended: Filed Aug. 8, 1980, effective Nov. 14, 1980. Rescinded and readopted: Filed Dec. 2, 1985, effective March 14, 1986. Amended: Filed Jan. 31, 1995, effective July 30, 1995. Emergency amendment filed March 5, 2004, effective March 15, 2004, expired Aug. 27, 2004. Amended: Filed March 5, 2004, effective Oct. 30, 2004. *Original authority: 267.645, RSMo 1955, amended 1993.