Difference between revisions of "Sheep Medicine Q&A 11"
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A vaginal swab, fetuses, and placentae should be submitted for laboratory examination. <br><br> | A vaginal swab, fetuses, and placentae should be submitted for laboratory examination. <br><br> | ||
Blood samples are collected from all aborted ewes for toxoplasma and EAE serology. | Blood samples are collected from all aborted ewes for toxoplasma and EAE serology. | ||
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|q2=List the common causes of abortion. | |q2=List the common causes of abortion. | ||
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''C. psittaci'' was demonstrated in direct smears from the placentae and a strong positive titre obtained in three of four blood samples; a very high titre for toxoplasma was recorded for the other ewe. <br> | ''C. psittaci'' was demonstrated in direct smears from the placentae and a strong positive titre obtained in three of four blood samples; a very high titre for toxoplasma was recorded for the other ewe. <br> | ||
Any further aborted material must be submitted to monitor the situation. The zoonotic risk of chlamydial abortion, especially to pregnant women, should be stressed. | Any further aborted material must be submitted to monitor the situation. The zoonotic risk of chlamydial abortion, especially to pregnant women, should be stressed. | ||
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|q3=What treatments would you consider? | |q3=What treatments would you consider? | ||
|a3=The ewe was treated with intravenous oxytetracycline and made a rapid recovery. The ewe accepted a small male triplet foster lamb. <br><br> | |a3=The ewe was treated with intravenous oxytetracycline and made a rapid recovery. The ewe accepted a small male triplet foster lamb. <br><br> | ||
All ewes in the group were injected with 20 mg/kg long-acting oxytetracycline intramuscularly that same day to reduce further abortions. | All ewes in the group were injected with 20 mg/kg long-acting oxytetracycline intramuscularly that same day to reduce further abortions. | ||
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|q4=What control measures could be adopted? | |q4=What control measures could be adopted? | ||
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#In this case it was recommended that all ewes which had possibly encountered infection this spring should also be vaccinated, and treated with long- acting oxytetracycline next year 6 weeks and 3 weeks before lambing. | #In this case it was recommended that all ewes which had possibly encountered infection this spring should also be vaccinated, and treated with long- acting oxytetracycline next year 6 weeks and 3 weeks before lambing. | ||
#Vaccination against toxoplasmosis would depend upon titres in aborted versus control ewes. | #Vaccination against toxoplasmosis would depend upon titres in aborted versus control ewes. | ||
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</FlashCard> | </FlashCard> | ||
Revision as of 14:26, 23 May 2011
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This question was provided by Manson Publishing as part of the OVAL Project. See more Sheep questions |
A two-crop ewe from a group of 155 pastured sheep due to start lambing in 3 weeks has aborted two fresh fetuses. Three other abortions have occurred over the previous 5 days. The ewe is bright and alert but there is a red–brown vulval discharge over the wool of the tail and perineum. The rectal temperature is 40.0°C (104.0°F). The udder is reasonably well developed and there is some accumulated colostrum.
| Question | Answer | Article | |
| What samples would you collect? | A vaginal swab, fetuses, and placentae should be submitted for laboratory examination. |
[[|Link to Article]] | |
| List the common causes of abortion. | Common abortifacient agents include:
C. psittaci was demonstrated in direct smears from the placentae and a strong positive titre obtained in three of four blood samples; a very high titre for toxoplasma was recorded for the other ewe. |
[[|Link to Article]] | |
| What treatments would you consider? | The ewe was treated with intravenous oxytetracycline and made a rapid recovery. The ewe accepted a small male triplet foster lamb. All ewes in the group were injected with 20 mg/kg long-acting oxytetracycline intramuscularly that same day to reduce further abortions. |
[[|Link to Article]] | |
| What control measures could be adopted? |
|
[[|Link to Article]] | |
