European Journal of Zoological Research
Abstract
Author(s): Adel Feizi, KamrouzKaboli, Amid Reza Jeyrani Moggadam, Mohammad Ali
Jafargolipour and Hossein Hosseini
Mycoplasma gallisepticum (MG) is one of the most important diseases in Iranian poultry industry and all over the
world. Mortality, poor weight gain and increasing of feed conversion ratio (FCR) were seen in MG infected flocks.
In this study, 110 samples were taken from 9 broiler breeder farms located in Tabriz-Iran during 2011-2012. The
prevalence of Mycoplasma gallisepticumwas studied by RSA test, and the clinical signs and lesions were evaluated
in all farms.Our results indicated that the prevalence of MG in Tabriz broiler breeder farms was 19.09% during
study period. Also in farms infected with MG, severe conjunctivitis, lungs and trachea hyperemia, and sever
airsacculitis with caseous exudates were obvious.It can be concluded that MG in broiler breeder farms have potency
of great economical losses, and it's clinical signs and gross lesions in infected birds were very severe and it could
decline broiler breeders performance. And also because of controlling of MG in Iran the prevalence of MG was
lower in comparison to previous years.
