title: Antibodies to the glycoprotein antigen of bovine leukemia virus in the cattle population of five states.
abstract: A selected (non-random) serological survey of cattle for antibodies to the glycoprotein antigen of bovine leukemia virus has been conducted in five states by seven investigators. A total of 1,295 beef and dairy cattle from 74 herds were studied with attention to the following: type of production, number of animals per herd, previous history of bovine leukemia cases in the herd, age of the animal, and serological reaction in the bovine leukemia glycoprotein immunodiffusion test (BL-GID). It was concluded that herd size (1-50, or 50+ animals per herd) exercised no influence on the percent positive BL-GID reactions. However, a previous history of clinical bovine leukemia in the herd and the type of production (beef or dairy) had considerable influence on the percent positive BL-GID reactors. Animals from herds that had a history of bovine leukemia exhibited 52.0% positive BL-GID reactions as compared to 13.7% reactors in animals from herds with no herd history of bovine leukemia. Beef animals exhibited 2.6% positive BL-GID reactions, while dairy animals exhibited 28.2% positive BL-GID reactions. Data were insufficient to determine age trends.
authors.forename: C
authors.initials: C
authors.lastname: House
authors.forename: J A
authors.initials: JA
authors.lastname: House
authors.forename: F L
authors.initials: FL
authors.lastname: Glover
mesh_terms: D000367:Age Factors; D000818:Animals; D000914:Antibodies, Viral / Q000097:blood*; D000956:Antigens, Viral / Q000276:immunology*; D002417:Cattle; D016583:Enzootic Bovine Leukosis / Q000453:epidemiology / Q000276:immunology*; D006023:Glycoproteins / Q000276:immunology*; D005779:Immunodiffusion / Q000379:methods / Q000662:veterinary; D015994:Incidence; D001909:Leukemia Virus, Bovine / Q000276:immunology*; D014481:United States / Q000453:epidemiology
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral; D006023:Glycoproteins