antibiotic sensitivity of ornithobacterium rhinotracheale isolates associated with respiratory diseases.

Antibiotic Sensitivity of Ornithobacterium rhinotracheale Isolates Associated with Respiratory Diseases.

187 commercial checken flocks affected with respiratory diseases were examined for Ornithobacterium rhinotracheale isolation. The bacterium was isolated from 105 (56.2%) poultry flocks. Drug sensitivity test using standard disk diffusion technique was performed with 19 antibiotics. All the isolates were susceptible to tiamulin and most of them were susceptible to chloramphenicol and linco-spect...

Characterization of Ornithobacterium rhinotracheale Isolates from Commercial Chickens

Ornithohac/erium rhino/rachea/e (ORT) is a relatively rceently diseovered bacterium. which it is associated with respiratory diseases, Tracheal samplcs from carcasses of 100 roultry tlocks submitted to Razi Institute were examined for ORT isolation. Ali these tlocks were affected with respiratory disorders. Colonies of ORT were detected after 24h of incubation and identification of ORT isolates...

Characterization of Ornithobacterium rhinotracheale Isolates from Commercial Chickens

Vaccination of chickens against Ornithobacterium rhinotracheale infection.

Vaccination of young broilers with inactivated vaccines against experimental Ornithobacterium rhinotracheale challenge was found to be effective, but the results of vaccination were influenced, in a negative way, by the presence of maternal antibodies. The use of a strong adjuvant, such as mineral oil, in a bacterin was necessary to obtain good protection when maternal antibodies were present. ...

Isolation, identification and antibiotic sensitivity determination of Ornithobacterium rhinotracheale in slaughtering broiler chicken flocks of Guilan province

Ornithobacterium rhinotracheale (ORT), a species of bacteria, is known to be associated with respiratorydisease, growth retardation, mortality and decreased egg production. The aim of the present study was todetermine seroprevalence of the infection and to identify the microorganism by bacteriological and molecularmethods. In this study, 460 serum samples and also 290 tracheal swabs were collec...

Isolation and characterization of small-colony variants of Ornithobacterium rhinotracheale.

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...