خيارات البحث
النتائج 1 - 6 من 6
Seroepidemiologic survey for adenovirus infection in lambs.
1993
Lehmkuhl H.D. | Cutlip R.C. | Brogden K.A.
A serologic survey was conducted to determine the prevalence and seroconversion rates for ovine adenovirus (OAV) serotypes 1-4 and bovine adenovirus (BAV) serotypes 2, 3, and 7 in sheep in Iowa and in surrounding states. For 2 consecutive years, paired serum samples were obtained from 1- to 2-month-old lambs as they entered a ram test station and, again, 2 months later. Sera were tested for adenovirus antibodies by use of a microtitration serum virus-neutralization test. At the time of entry, high prevalence of antibody (titer greater than or equal to 2) was detected to all tested adenoviruses except BAV-3. All adenoviruses were active in the ram test station both years, as indicated by greater than or equal to fourfold increase in adenovirus antibody titer (seroconversion) in some of the lambs. The prevalence and seroconversion rate for OAV-1 was 94.0 and 7.2%, respectively; for OAV-2, 98.6 and 15.1%; for OAV-3, 86.5 and 11.0%; for OAV-4, 98.4 and 13.2%; for BAV-2, 97.6 and 22.4%; for BAV-3, 11.4 and 3.8%; and for BAV-7, 81.6 and 4.5%. The results indicate that adenovirus infections were widespread in the sheep population and that the prevalence of active infection based on seroconversion rates was approximately 45%.
اظهر المزيد [+] اقل [-]Typing of Staphylococcus hyicus subsp. hyicus by staphylococcin sensitivity
1993
Park, C.K. (Kyungpook National University, Taegu (Korea Republic). College of Veterinary Medicine)
Characterization of Salmonella enteritidis strains
1993
Poppe, C. | McFadden, K.A. | Brouwer, A.M. | Demczuk, W.
Characterization of Escherichia coli isolated from cases of avian colibacillosis
1993
Allan, B.J. | Hurk, J.V. van den | Potter, A.A.
The (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium) colorimetric assay for the quantitation of Actinobacillus pleuropneumoniae cytotoxin
1993
Chung, W.B. | Backstrom, L.R. | McDonald, J. | Collins, M.T.
Detection of Actinobacillus pleuropneumoniae in the porcine upper respiratory tract as a complement to serological tests
1993
Sidibe, M. | Messier, S. | Lariviere, S. | Gottschalk, M. | Mittal, K.R.
