Abstract: Anti—schistosome antibody levels in blood serum of experimentally infected 3 cattle and 3 rabbits before and after treatment were detected by Reagent Kit of DIGFA for Animal Schistosomiasis(RKDAS)．Anti—schistosome antibodies could
be detected with RKDAS when Cattle 1，Cattle 2 and Cattle 3 had been infected by schistosome cercaria for 3，4 and 2 weeks，respectively．The antibodies could not be detected afterthe cattle had been treated with Praziquantel for 29，27 and 39 weeks，respectively．Meanwhile，the anti—schistosome antibodies could be detected by RKDAS when Rabbit 1，Rabbit 2
and Rabbit 3hadbeeninfected by schistosome cemaria for 3，3 and 4 weeks，respectiv由．The antibodies could not be detected after the rabbits had been treated with Praziquantel for 35，17 and 39 weeks，respectively．Compared with the feces hatching miracidium method，RKDAScould detect the diseased cattle and rabbits which were infected by schistosome 2 weeks earlier．The results suggested that RKDASCould be used for early detection of schistosomiasis in livesteck．If the livestock infected with schistosome had been treated with medicine for mole than 10 months，the detection results of RKDAS
had an assessable therapeutic effect．

Key words: schistosome, cattle, rabbit, antibody level, dot immuno-gold filtration assay