8 signs of trichomoniasis

Trichomoniasis is a sexually transmitted pathogen associated with reduced fertility and abortions in cows. Leonard Eldridge, state veterinarian in Washington, says the signs of a trichomoniasis infection in a herd are:

• Repeat breeding (due to temporary infertility).

• Extended calving season (late calves).

• Early abortion (too early to find fetus) (>50 percent).

• Occasional late-term abortions (<5 percent).

• High percent of open cows at pregnancy check (30 to 50 percent).

• Pyometra (pus-filled uterus) in 1 to 5 percent of cows.

• Reduction in number of calves born by 30 to 50 percent.

• Less-uniform calf crops strung out over three to eight months.

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