What is "Trich"?
Cattle trichomoniasis or "Trich" is a venereal disease of cattle caused by the Tritrichomonas foetus protozoa, which is about the size of a sperm. Infected bulls carry the organism on their penis and prepuce. Trichomoniasis is then transmitted to cows through breeding. Cows may abort early in the pregnancy and become temporarily infertile. Only testing will confirm the presence or absence of the disease.
Cattle producers can lose valuable income from the extended breeding seasons and diminished calf crops caused by this disease. The cattle industry and trade associations in Texas requested that the Texas Animal Health Commission develop regulations to stop the introduction and spread of this disease.
TAHC’s Trichomoniasis regulations were developed with a working group of producers, market operators, veterinarians, laboratory representatives and educators. Under the program that was phased in beginning April 2009, Trichomoniasis is a reportable disease in Texas. The program will be reviewed annually by the Trichomoniasis Review Working Group.

For more information or questions about the Trichomoniasis Program, please contact your local TAHC Region Office.


The Trichomoniasis regulations are posted on the Secretary of State website.

TAHC Information Resources

TAHC News Releases
Date Title
March 2014 Radio Interview: Dr. Andy Schwartz interviews with the Farm Bureau News & Views segment and talks about recently adopted cattle rules (following the Jan. 14 commission meeting) for the Animal Disease Traceability, Trichomoniasis and Fever Tick Programs.
January 2014 TAHC Adopts Cattle Rules for Animal Disease Traceability, Trichomoniasis and Fever Tick Programs
September 2012 TAHC Proposes Changes to Current Texas Cattle Trichomoniasis Regulations
August 2011 Changes to Texas Cattle Trichomoniasis Regulations
October 2010 TAHC Adopts Revisions to Texas' Cattle Trichomoniasis Program
February 2009 Texas Cattle Trichomoniasis Program Adopted: Interstate Rules Effective April 1, 2009; In-State Rules Effective Jan. 1, 2010