Serologic survey for Bordetella bronchiseptica in Nebraska specific-pathogen-free pigs
Shashidhar, B.Y.; Underdahl, N.R.; Socha, T.E.
American Journal of Veterinary Research 44(6): 1123-1125
1983
ISSN/ISBN: 0002-9645 PMID: 6223547 Document Number: 197135
The frequency of B. bronchiseptica infection in Nebraska SPF pigs was determined by serological and bacteriological cultural analysis. Serum samples from non-SPF herds were tested for comparison. A total of 1282 of 1397 (92%) of the SPF pigs tested had antibody to B. bronchiseptica; 37 of 220 (17%) were culture-positive, and 67 of 4125 (1.6%) were suspected of atrophic rhinitis during slaughter inspection. A higher percentage of the non-SPF pigs had titres to B. bronchiseptica (642 of 659 pigs or 97% of the pigs tested). There was no relationship between the B. bronchiseptica antibody titre, the isolation of B. bronchiseptica, or the frequency of gross lesions of atrophic rhinitis from pigs within the herd. The serum agglutination test may be a more reliable procedure for determining the herd prevalence of B. bronchiseptica than isolation of the organism by cultural methods.