National seroprevalence of Toxoplasma gondii in pigs |
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| Authors: | J P Dubey J C Leighty V C Beal W R Anderson C D Andrews P Thulliez |
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| Institution: | Livestock and Poultry Sciences Institute, Beltsville Agricultural Research Center-East, Maryland 20705-2350. |
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| Abstract: | Serum samples from 11,842 commercial pigs killed in 1983-1984 throughout the United States were tested for anti-Toxoplasma gondii antibodies by the agglutination test in dilutions of 1:25, 1:50, and 1:500. Anti-T. gondii antibodies were found in 23.9% of pigs. At dilutions of 1:25, 1:50, and 1:500, 13.5%, 6.9%, and 3.5% were serologically positive, respectively. The prevalence of anti-T. gondii antibodies was higher in breeder pigs (42%) than in market pigs (23%). These results indicate that anti-T. gondii antibodies are widespread in the national swine herd. |
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