PasteurellaceaePasteurellaceae InfectionsActinobacillusPasteurellaMannheimiaHaemophilusPasteurella InfectionsPasteurella pneumotropicaMoraxellaceaePorpoisesHaemophilus somnusPasteurella multocidaHaemophilus paragallinarumMannheimia haemolyticaRNA, Ribosomal, 16SVibrionaceaeActinobacillus pleuropneumoniaeHaemophilus ducreyiDNA, BacterialDNA, RibosomalPhylogenyActinobacillus InfectionsSequence Analysis, DNAMolecular Sequence DataGenes, rRNA