title: Seroprevalence of Toxoplasma gondii in Rocky Mountain bighorn sheep (Ovis canadensis).
abstract: Serum samples from 697 Rocky Mountain bighorn sheep (Ovis canadensis) from North America were examined for antibodies to Toxoplasma gondii by the modified agglutination test incorporating mercaptoethanol and formalin-fixed tachyzoites. Antibodies to T. gondii were found in 25 of 697 (3.6%) sheep in titers of 1:25 (8 sheep), 1:50 (4 sheep), 1:100 (7 sheep), 1:200 (1 sheep), 1:400 (1 sheep), 1:800 (1 sheep), and 1:1,600 (3 sheep). This is the first record of T. gondii exposure in bighorn sheep.
authors.affiliation: United States Department of Agriculture, Livestock and Poultry Sciences Institute, Beltsville Agricultural Research Center, Maryland 20705-2350, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Dubey
authors.forename: W J
authors.initials: WJ
authors.lastname: Foreyt
mesh_terms: D000372:Agglutination Tests / Q000662:veterinary; D000416:Alberta / Q000453:epidemiology; D000818:Animals; D000835:Animals, Wild; D000913:Antibodies, Protozoan / Q000097:blood*; D005260:Female; D008297:Male; D009505:Nevada / Q000453:epidemiology; D015205:Northwestern United States / Q000453:epidemiology; D016036:Seroepidemiologic Studies; D012756:Sheep; D012757:Sheep Diseases / Q000453:epidemiology*; D014122:Toxoplasma / Q000276:immunology*; D014124:Toxoplasmosis, Animal / Q000453:epidemiology*
chemical_list: D000913:Antibodies, Protozoan