OAR 603-011-1715: Procedure for Official Test and Quarantine – Bovine Trichomoniasis

(1) As used in this rule: (a) "Exposed herd" is a cattle herd that has had, within the previous twelve months, direct commingling or cross-fence contact with a test-positive herd during a time of potential breeding activity. (b) "Test-positive herd" is a herd of cattle in which a diagnosis of trichomoniasis has been made by a certified, licensed veterinarian using an Official Test for bovine trichomoniasis. A herd will be considered to be a Test-positive herd until the requirements in section (10) of this rule have been met. (c) “Trich-year” is a period from September 1st of one calendar year to August 31st of the following calendar year. A trich-year shall be known by the year in which it ends. (d) “Official Test” means a test for bovine trichomoniasis that uses quantitative polymerase chain reaction (qPCR). (2) All veterinarians engaged in testing and diagnosis for bovine trichomoniasis in Oregon shall: (a) Hold a valid license to practice veterinary medicine in Oregon; (b) Be certified by the Department after having completed an appropriate training program; and (c) Use only Official Tests for testing trichomoniasis samples. (3) All bulls tested for bovine trichomoniasis must be withdrawn from breeding contact and tested between 14 and 90 days after withdrawal, and shall be identified by the certified veterinarian at the time of sample collection as follows: (a) By permanent official identification at the time of testing except that a previously placed permanent official identification may be used in lieu of placing a new tag in the ear. (b) By an ear tag displaying the state, four-digit year of the trich-year in which the testing is performed. The color of the tag shall be: (A) Yellow for trich-years ending in “0” or “5”; (B) Green for trich-years ending in “1” or “6”; (C) White for trich-years ending in “2” or “7”; (D) Orange for trich-years ending in “3” or “8”; and (E) Blue for trich-years ending in “4” or “9”. (4) Any sexually intact male bovine less than 18 months of age that is certified by the owner or manager as having had no potential breeding contact with females may be identified as described in section (3) of this rule when required by a grazing association or other entity. (5) All bulls identified as described in section (3) or (4) of this rule must be reported by the veterinarian to the Department within 7 days on a form provided by the Department. (6) Bulls that test positive on an Official Test for bovine trichomoniasis shall be held under quarantine separate and apart from other cattle and shall comply with one of the following: (a) Test-positive bulls moving out of the infected herd into commercial slaughter marketing channels, including collection points, shall: (A) Be identified before moving with an "S" brand applied to both sides of the tailhead; and (B) Shall move to slaughter only under the authority of a VS Form 1-27 Permit for Movement of Restricted Animals; or (b) Test-positive bulls moving out of the infected herd directly to slaughter shall do so with: (A) A VS Form 1-27 Permit for Movement of Restricted Animals; and (B) Prior notification of the State Veterinarian; and (C) Record of their permanent identification on the VS Form 1-27 under which authority they move. (7) In response to a positive Official Test for bovine trichomoniasis, the Department shall: (a) Conduct an investigation to identify herds that were potentially exposed to the infected herd; (b) Require that any further bovine trichomoniasis testing be performed by a certified veterinarian, if the original test was performed by a non-certified veterinarian; (c) Require testing of the following bulls in the herd in which the test-positive and in any exposed herd: (i) All bulls of any age with known breeding contact with female cattle; and (ii) Each bull 18 months of age and over; and (d) Require all bulls in test-positive herds to each have one (1) negative Official Test for bovine trichomoniasis completed at least seven (7) days after the initial diagnosis is made. Bulls that have a positive test result shall be considered infected and be handled as described in section (6) of this rule. (8) In a test-positive herd with a valid Out-of–State Grazing Permit issued in accordance with OAR 603-011-1111: (a) All bulls must be restricted in place until Official Test results are complete as described in subsections (7)(c)-(d) of this rule. Bulls that have a positive test result shall be considered infected and be handled as described in section (6) of this rule; or (b) All herdmate bulls from Out-of-State Permit affected herds shall be returned to their state of origin to complete official trichomoniasis testing as described in subsections (7)(c)-(d) of this rule. Test-positive bulls shall not be returned to their state of origin. (9) In an exposed herd with a valid Out-of–State Grazing Permit issued in accordance with OAR 603-011-1111: (a) All bulls must be quarantined in place until one Official Test is completed for each bull. Any cattle determined to be infected will be quarantined and the herd status will be changed to a test-positive herd and subject to the requirements of section (8) of this rule; or (b) All herdmate bulls must be returned to their state of origin to complete official trichomoniasis testing. Any bull that has a positive test result shall cause the herd to be classified as test-positive and treated as in section (8) of this rule. (10) All bulls from a test-positive herd must be re-tested every trich-year until every remaining bull tests negative during the same test period. (a) All bulls from a test-positive herd must be re-tested before February 1 of the following calendar year. (b) All bulls removed or culled from a test-positive herd must be tested before removal or culling. (11) Failure to comply with the above provisions for response to a positive bovine trichomoniasis test shall result in quarantine of all cattle in the non-compliant herd under ORS 596.392(4).