Trichomonosis is a venereal disease of cattle caused by the protozoan Trichomonas foetus. The disease is transmitted to cows/heifers by sexual contact with infected bulls. Trichomonosis infection can cause prolonged breeding seasons and economic loss in both beef and dairy herds.

Endemic Areas

T. foetus protozoa are found worldwide.

Clinical Signs

• Early abortion
• Irregular estrus cycles
• Prolonged breeding seasons
• Pyometra (pus-filled uterus)

Treatment

There is no specific treatment for Trichomonosis. Although bulls are infected for life, cows/heifers often recover spontaneously. Any cow suspected of having Trichomonosis should be reported to the State Veterinarians or USDA Area Veterinarian in Charge immediately.

Prevention

Trichomonosis vaccinations are available, but they only help a cow recover more quickly from the infection. They do little to prevent Trichomonosis infection.

The best way to prevent the entry of Trichomonosis into the herd is through the use of artificial insemination. In addition, any bull entering the herd should be tested several times for T. foetus protozoa before having access to the cows.

Public Health

Trichomonosis isn't a public health threat.

Links

Trichomonosis Fact Sheet -UC Davis

Bovine Trichomonosis -Montana Department of Livestock