Identification of trichomonad-carrier cows.
Seven pregnant cows (gestation durations, 42 days to 7 months) were identified as culture-positive for Tritrichomonas foetus. For 6 of these pregnancies, 2 of the youngest fetuses were aborted, and calves were delivered by the other 4 cows. Two cows became carriers, maintaining trichomonad infections for 6 and 9 weeks after parturition. Carrier cows may be a source of reinfection for their herd mates. Hence, strategies for controlling trichomoniasis might include delaying the time of first breeding and aggressive culling of infected cows.
Skirrow
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Department of Veterinary Reproduction, University of California, Davis 95616.
D000818:Animals; D002353:Carrier State / Q000175:diagnosis / Q000662:veterinary*; D002417:Cattle; D002418:Cattle Diseases / Q000175:diagnosis / Q000517:prevention & control*; D005260:Female; D008297:Male; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000175:diagnosis / Q000517:prevention & control / Q000662:veterinary*; D011528:Protozoan Infections / Q000175:diagnosis / Q000517:prevention & control; D011529:Protozoan Infections, Animal; D012749:Sexually Transmitted Diseases / Q000517:prevention & control / Q000662:veterinary*; D014318:Tritrichomonas