The effects of two Ureaplasma diversum strains on early pregnancy in heifers.
Two field isolates of Ureaplasma diversum spp. were used to infect heifers at the time of insemination in a preliminary study to observe the effect of infection on early pregnancy. M84-14c-1 was a field isolate from a bull's prepuce typed by immunofluorescence to be similar to U. diversum strain T-44 (Group C). M84-477c-4 was a field isolate from bovine semen typed by immunofluorescence to be similar to U. diversum strain T-288 (Group A). All three heifers infected with M84-477c-4 had a mild granular vulvitis at some time during the trial. None was pregnant when slaughtered 27 days after infection. The result of infection with M84-14c-1, a preputial isolate, was not consistent. One heifer had no infection and a normal pregnancy, one heifer was infected with an abnormal pregnancy, and one heifer was open but ureaplasmas were not detected until day 17 of the trial.
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Agriculture Canada, Animal Diseases Research Institute, Lethbridge, Alberta.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D005260:Female; D008297:Male; D009180:Mycoplasmatales Infections / Q000662:veterinary*; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000662:veterinary*; D014509:Ureaplasma; D014847:Vulvitis / Q000662:veterinary