Serums from 270 llamas representing 21 farms throughout Oregon were obtained and assayed for antibody levels against viruses of livestock. These viral diseases included: bovine viral diarrhea (BVD), bovine herpesvirus 1 (BHV-1), parainfluenza-3 (PI-3), bovine respiratory syncytial virus (BRSV), bovine adenovirus species 3 (BA3), equine herpesvirus 1 (EHV-1), equine adenovirus (EA), equine influenza, subtypes 1 and 2 (EI-1, EI-2), equine viral arteritis (EVA), ovine progressive pneumonia (OPP), bluetongue (BT), vesicular stomatitis, New Jersey strain and Indiana strain (VSV-NJ, VSV-IN), and llama adenovirus strain 7649 (LA7649). Antibodies to Ehrlichia risticii (ER), the rickettsia) organism causing Potomac horse fever (PHF), were also assayed. Of the 270 llamas, 252 had antibodies to LA7649. A total of 60 llamas possessed antibodies to various viruses associated with livestock disease. Seven of these llamas had antibodies to more than one virus (excluding LA7649). Forty three exhibited antibodies to EA, 12 to BVD, and 12 to PI-3. Four had antibodies to BTV, 2 to BHV-1, and 2 to EI-1. One had antibodies to EI-2, one to EHV-1, and one to BRSV. All 270 llamas lacked antibodies to EVA, BA3, VSV-NJ, VSV-IN, OPP and ER. Presence and type of livestock were noted on each farm. Whether a llama was born on the farm or purchased and the length of time the llama had been on the farm was also noted. / Graduation date: 1993