[Isolation and differentiation of a cytochrome oxidase-negative strain of Ornithobacterium rhinotracheale from turkeys].

The present study describes the first isolation and identification of a cytochrome oxidase-negative strain of Ornithobacterium rhinotracheale. This strain was isolated from 19-week-old turkeys with severe respiratory signs and was identified using biochemical, cytochemical and serological test methods. These findings indicate that cytochrome oxidase-negative Ornithobacterium rhinotracheale strains become probably also an important rule as a causative agent.