title: Studies on the effects of infectious bovine rhinotracheitis virus on reproduction in heifers.
abstract: Natural venereal infection of heifers with IBR virus resulted in vulvovaginal lesions in 9 of 12 heifers at 3 weeks after introducttion to bulls, and virus was isolated from 5 of the 9 affected animals. The infection was not associated with any effect on conception. Experimental nasal and conjunctival infection of 18 heifers pregnant for 3, 5 or 7 months with a genital strain of IBR virus caused mild rhinitis or conjunctivitis in all inoculated animals and virus was recovered from 14 animals at 8 days after inoculation. No effects on pregnancy were recorded.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral; D002417:Cattle; D002418:Cattle Diseases / Q000209:etiology* / Q000276:immunology / Q000382:microbiology; D005260:Female; D007242:Herpesvirus 1, Bovine / Q000276:immunology / Q000302:isolation & purification / Q000472:pathogenicity*; D007241:Infectious Bovine Rhinotracheitis / Q000209:etiology; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000209:etiology*; D014848:Vulvovaginitis / Q000276:immunology / Q000382:microbiology / Q000662:veterinary*
chemical_list: D000914:Antibodies, Viral