Trichomoniasis Control

Bovine Trichomoniasis is a reportable disease in Oregon. Notification of disease diagnosis should be immediately reported to the Oregon State Veterinarian.

Veterinarians working within the trichomoniasis program that are testing bulls in Oregon need to be "trich certified". Certification requires training in trichomoniasis sample collection and laboratory procedures. Oregon is currently accepting the certification of veterinarians certified in states that have a certification process. Recertification is currently due every 5 years, but it can be more often if new information about trich testing or lab procedures becomes available. Any veterinarian interested in becoming Trich certified in Oregon, should contact the animal health office at 503-986-4680.

Once trichomoniasis is diagnosed in a herd, all further testing within that herd and in the exposed herds must be done by a trich certified veterinarian. Retesting of the herd and all exposed herds are required to be tested for trich by PCR and the positive index herd is further required to test annually until negative. An epidemiologic disease investigation is started. Positive bulls will be removed from the herd to prevent further spread of disease. Positive bulls must be disease branded and can only be transported using a VS 1-27 Movement of Diseased Livestock form that is issued by the State Veterinarian's office. Veterinarians will need to work with the State Veterinarians office to obtain this form prior to movement of infected animals off the property.

Veterinarians not using the ODA laboratory should fax their test/tag report forms to ODA as soon as the testing is complete. Those reports are filed by clinic and their immediate access greatly facilities the work up of a positive case. This includes reporting any virgin bulls that were identified for grazing purposes but not tested for trich. Additionally, such reports often aid in the identification of the owner of strayed bulls or the reassurance to a concerned stock grower that testing has been done.

At least one county in Oregon, Malheur, requires the OR official trich tag on all bulls that will go to public grazing in that county. Additionally, some grazing associations require the same identification. Frequently, the testing veterinarian does not know the grazing destination of the bulls being tested, so tagging of all bulls tested can facilitate the management of bulls.

Surrounding states (specifically ID, CA, MT, WY, and NV) have strict regulations in place regarding trichomoniasis. In order to meet CVI, import permit, or pasture-to-pasture permit requirements, some identification system needs to be in place. Oregon’s official trich tag, combined with a USDA official identification device provides such documentation.

Trichomoniasis Ear Tags

The trich program year begins September 1 and runs through August 31, and a different tag color applies for each trich year. For example, the 2022 trich year will begin September 1, 2021. As of that date, the test tags applied should be White and the button will be printed 2022.

The Oregon Trich Ear Tag must be tamperproof, 3" wide x 2 1/4" tall with a self-piercing male button printed with the current trich year. The female portion of the tag will have OR TRICH printed above a four or five-digit number.

Tags meeting the identification requirement are in stock at MWI Veterinary Supply (1-800-8243703, specify TRICH TAG OREGON) and available for immediate shipment. The tags come in bags of 25. Due to the very specific nature of these tags, they are non-returnable to the supplier. Veterinarians are free to order their own tags so long as they meet the size, color, and printed information specifications of the program. There might be considerable time lag for such custom tag orders so they should be planned well in advance. Any leftover program tags can be utilized on the next color tag cycle.

Trich tag colors change each year in a 5-year rotation as follows:

• 2026 – Green
• 2027 – White
• 2028 – Orange
• 2029 – Blue
• 2030 – Yellow

Continuity of identification of the bull from year to year should be maintained either by a ranch tag, tattoo, EID or a silver alphanumeric USDA tag.