الفهرس 
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Abstract
A total of 1198 serum samples were used for detection of mycoplasma gallisepticum antibodies among 12 broiler breeder flocks by ELISA. 634 (52.92%) samples were positive. And by using 1113 serum samples for detection of mycoplasma synoviae antibodies by ELISA. 867 (77.89%) samples were positive.