Toxoplasma infection and abortion in dairy goats

Serological investigation by the indirect haemagglutination test for Toxoplasma antibodies was carried out in a flock of dairy goats. Antibody titres ranging from 1:4 to 1:1,024 were found in 34% of 371 apparently healthy animals. High antibody titres of 1:256 suggestive of recent infection were noted in 18(4.9%) animals including 13 nannies. The occurrence of a number of non-brucella abortions associated with high serological titres and the isolation of the parasite from the brain tissues of an aborted foetus suggested Toxoplasma as a probable aetiologic factor. Sera having significantly levels of haemagglutinating antibodies (greater than or equal to 1:128) were also found positive to the card agglutination test. Epidemiological aspects and the public health potential of subclinical toxoplasmosis in dairy goats are discussed.