5Hoffmannn C R,Bikei G.The effect of a homologous bacterin given to sows prefarrowing on the development of Glasser's desease in postweaning pigs after challenge with Haemophilus parasuis serotype 5[J].Dtsch Tierarztl Wochenschr,2002,109(6):271-276.
6Oliveria S,Pijioan C.Haemophilus parasuis:newtrends on diagnosis,epidemiology and control[J].Vet Microbiol,2004,99(1):1-12.
7Kieletein P,Wuthe H,Angen O,et al.Phenotypic and genetic characterization of NAD-dependent Pasteurella ceae from the respiratory tract of pigs and their possible pathogenetic importance[J].Vet Microbiol,2001,81(3):243-255.
8Li J X,Jiang P,Wang Y,et al.Genotyping of Haemophilus parasuis from diseased pigs in China and prevalence of two coexisting virus pathogens[J].Prev Vet Med,2009,91(1):274-279.
9Kieletein P,Rapp-Gabrielson V J,Designation of 15 serovars of Haemophilus parasuis on the basis of immunodiffusion using heat-stable antigen extracts[J].J Clin Microbiol,1992,30(4):862-865.
