PREVALENCE OF MYCOPLASMA SYNOVIAE INFECTION IN BROILERS AND LAYERS WITH SPECIAL EMPHASIS TO IN VITRO ANTIMICROBIAL SENSITIVITY.

This work aimed to study the prevalence of Mycoplasma synoviae (MS) in some broiler and laying chicken farms. For this aim 103 samples (synovial fluid, bumbled foot exudates, lung , trachea, air sacs and tracheal swabs) were collected and examined for isolation of MS using specific medium. Three isolates were obtained; 2 from layers and 1 from broilers. Polymerase chain reaction technique (PCR) was adopted for detection of DNA of MS OIE primers. Minimal inhibitory concentration (MIC) was done to representative field isolate and a reference strain against some antimicrobials including (Tylvalosin(TVN), Enrofloxacin(Enro), Doxycycline(Dox), Lincomycin(linc), Tilmicosin(Til), Tiamulinefumirate(Tia), Amoxycline(Amox), TylosinTartarate(Tyl) and chloratetracycline(CTC). Tylovalosintartarate has the lowest MIC against field MS isolate.