Journal of the Japan Veterinary Medical Association
Online ISSN : 2186-0211
Print ISSN : 0446-6454
ISSN-L : 0446-6454
Bacteriological and Serological Survey for Haemophilus parasuis in Conventional and SPF Pig Farms
Hiroshi AMANONorikazu KAJIOMamoru TSUCHIYAMasatoshi SHIBATASachio SANOGengo SHUGIYAMA
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1993 Volume 46 Issue 11 Pages 913-916

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Abstract

Haemophilus parasuis was isolated from the nasal cavity in 257 of 318 (80.8%) conventional pigs reared in 12 conventional farms in Shizuoka Prefecture, whereas 3 SPF farms were negative. Fifty-one (83.6%) and 10 (16.4%) of 61 isolates examined were shown to be of types I and II, respectively, by polyacrylamide-gel electrophoresis. Complement-fixation (CF) antibody against H. parasuis was detected in 171 of 203 (87.4%) conventional pigs, whereas 98 SPF pigs examined were negative for the antibody. Of the slaughter house pigs 278 cases examined had the CF antibody, while no correlation between the antibody titers and chronic serositis was demonstrated.

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