Ornithobacterium rhinotracheale was found to cause growth retardation in both turkeys and chickens after experimental intra-air sac administration and to cause growth retardation together with airsacculitis and pneumonia after aerosol administration. Both turkey and chicken isolates of O. rhinotracheale were able to induce the same kind of respiratory inflammations and weight-gain losses in chi...

Ornithobacterium rhinotracheale is a Gram-negative bacterium associated with respiratory diseases in many avian species, with worldwide distribution, and it causes significant economic loss to the poultry industry. In this study, the isolation and characterization of O. rhinotracheale small-colony variants (SCVs) are described for the first time. O. rhinotracheale isolates (n = 27) were recover...

The objective of this study was to estimate the true prevalence of individual chickens serologically test-positive against avian pneumovirus and Ornithobacterium rhinotracheale in Uruguay. Seventeen different broiler farms existed in three different provinces in Uruguay were recruited and the 1861 broilers were investigated. Individual-chicken sera were analyzed using a commercial enzyme-linked...

The Gram-negative, pleomorphic, rod-shaped bacterium Ornithobacterium rhinotracheale is a cause of pneumonia and airsacculitis in poultry. It is a member of the family Flavobacteriaceae of the phylum "Bacteroidetes". O. rhinotracheale strain H06-030791 was isolated from the lung of a turkey in North Carolina in 2006. Its genome consists of a circular chromosome of 2,319,034 bp in length with a ...

Minimum inhibitory concentrations (MICs) of eight antimicrobial agents were tested for 11 Ornithobacterium rhinotracheale isolates and for one type strain. Of the eight antibiotics examined, oxytetracycline was the most active antibiotic with MIC ranges of < or = 0.125 1 μg/ml for O. rhinotracheale isolates. All isolates were resistant to gentamicin and neomycin. Resistance to doxycycline occur...

respiratory diseases are considered as common disorders in broiler farms. over the past decade a pleomorphic gram negative bacteria which isolated from broilers with respiratory diseases now calls ornithobacterium rhinotracheale . in this study, samples from trachea and lung collected from chicken with clinical respiratory signs in 173 broiler farms and then subjected on bacterial culture. the ...

Ornithobacterium rhinotracheale strain ORT-UMN 88 is a Gram-negative, pleomorphic, rod-shaped bacterium and an etiologic agent of pneumonia and airsacculitis in poultry. It is a member of the family Flavobacteriaceae of the phylum Bacteroidetes. O. rhinotracheale strain ORT-UMN 88 was isolated from the pneumonic lung of a turkey in 1995. It was the isolate first used to experimentally reproduce...