| isolation and identification of ornithobacterium rhinotracheale in broiler breeder flocks of guilan province, north of iran. | the aims of the present study were to isolate and serotype, determine the seroprevalence, drug susceptibility and diagnosis of infection by polymerase chain reaction (pcr). in this study 460 serum samples and 220 tracheal swabs, 90 ovaries and oviduct swabs, 90 misshapen egg shells swabs were collected from 22 broiler breeder flocks of 5 companies. serological results showed that all of the 22 flocks (100%) were positive for ort infection. ornithobacterium rhinotracheale (ort) antibodies were de ... | 2008 | 18817252 |