gallibacterium gallibacterium gallibacterium is a genus of bacteria from the family of pasteurellaceae. gallibacterium bacteria are pathogens for chicken. gallibacterium scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: pasteurellales family: pasteurellaceae genus: gallibacteriumchristensen et al. 2003 type species gallibacterium anatis species g. anatis g. melopsittaci g. salpingitidis g. trehalosifermentans synonyms salpingitia, pasteurella haemolytica complex