Abstract
On the pig farm in Longyan City, Fujian province, chlamydial abortion in pregnant pigs happened. White rice-like granule lesions were formed in the placentas of some cases which had not been reported before in China. For knowledge of the problem, 30 pig sera were sampled for detecting the antibodies against chlamydia psittaci using IHA for animal chlamydiosis and the result of test was 12 serum samples were positive for chlamydial antibody (the antibody titer 1:16~1:64), and the chlamydia infection rate reached 12/30 (40.0%). And we sampled two fetus stomach contents and five fetal membranes for examining Chlamydia sp. by means of nested polymerase chain reaction (nested-PCR) and the result showed 1/2 aborted pig fetus’s fetal membranes with a lot of white rice-like granules, 2/2 aborted pig fetus’ stomach contents, and 2/3 aborted pig fetus’s fetal membranes without any white rice-like granules were positive for chlamydia (5/7 positive rate). The lesion formation may be related with chlamydia infection time.
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