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An island-wide serological survey on antibodies against Mycoplasma gaiiisepticum (MG) and M. svnoviae (MS) were carried out by means of serum plate agglutination test.
A total of 796 serum samples were randomly collected from 77 breeding farms during 1982. Antibody against MG was detected in 75 farms, and an average of 86.7% of the serum samples were jkpositive in the tests. Antibody against MS was found in 76 farms, and an average of 79.0% of the serum smaples wee positive.
In 1984, another 1,066 serum samples were randomly collected from 68 breeding chicken farms in Taiwan. Antibody against MG was shown in G2farms. and an average of 79.8% of the serum samples was positive in the tests. Antibody against MS was revealed in 66 farms, and an averae of 72.7% of the serum samples were positive.
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