title: Reproductive difficulties in cattle with antibody titers to Haemophilus somnus.
abstract: A herd of Holstein cows was examined because of suspected embryonic death. Four cows had embryonic loss, and 2 cows had aborted. Paired serum samples were tested for antibodies to infectious bovine rhinotracheitis virus, bovine viral diarrhea virus, and Haemophilus somnus. Of 16 cows, 8 had antibody titers to H somnus greater than 1:1,024, and 3 had greater than or equal to four-fold changes in antibody titers to H somnus. Haemophilus somnus infection was active in this herd and may have been responsible for the herd's reproductive problems.
authors.affiliation: Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing 48824.
authors.forename: P L
authors.initials: PL
authors.lastname: Ruegg
authors.forename: J V
authors.initials: JV
authors.lastname: Marteniuk
authors.forename: J B
authors.initials: JB
authors.lastname: Kaneene
mesh_terms: D000034:Abortion, Veterinary / Q000276:immunology / Q000382:microbiology*; D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis*; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology / Q000382:microbiology*; D005260:Female; D006190:Haemophilus / Q000276:immunology*; D006192:Haemophilus Infections / Q000150:complications / Q000662:veterinary*; D007247:Infertility, Female / Q000276:immunology / Q000382:microbiology / Q000662:veterinary; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000276:immunology / Q000662:veterinary*
chemical_list: D000907:Antibodies, Bacterial