Chlamydial Abortion

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Chlamydial Abortion

Enzootic Abortion

Causes:Abortion in Goats

  • The Chlamydia psittaci organism is more common in sheep but has also been reported in several severe outbreaks of abortion disease in goats.


  • Abortions occur late in pregnancy (usually one of the first three pregnancies). Later deliveries are normal. Kids may be carried full term but delivered stillborn (sometimes as mummified fetus) or in a weakened condition. Retained afterbirth is common after abortions. The doe seldom suffers any common after effect unless she gets a uterine infection from retained fetus or afterbirth. Large numbers of does in newly infected herds abort. Chlamydial abortion can be positively diagnosed only by culture of the aborted fetus or membranes or by a blood test done in a laboratory.


  • It is thought that females or offspring may become infected by swallowing the organism during the kidding season, with the organism delaying growth in the doe until late in the following pregnancy.

Treatment:Chlamydiosis (Chlamydia psittaci)

  • The use of tetracycline drugs given intramuscularly for 5 to 7 days has been reported to help in decreasing the number of abortions by reducing the spread of the organism to uninfected goats. Feeding the oral tetracyclines at 110 to 165 g/metric ton of 110 to 165 mg/kg of feed has also helped control this disease. Those fetuses already infected, however, will abort regardless of treatment.


  • The best way to keep the disease from spreading is to burn or bury the dead kid and tissues from the birth process and to isolate aborting does from the rest of the herd. In some countries, a vaccine has been developed that seems to work quite well when given 1 month before breeding the goats


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