| Question | Answer | Article | |
| What is cobalt required for by the ruminant? | Production of vitamin B12 by the rumenal microflora.
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| What is vitamin B12 required for? |
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| What other species can be affected by cobalt deficiency? |
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| What age of sheep is most susceptible and why? | Growing lambs >6 weeks old
*Younger lambs use glucose for energy so have a low requirement |
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| What are the common clinical signs? |
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| What is white liver disease and how does it present? | It is fatty degeneration of the liver caused by cobalt deficiency.
This causes hepatic failure which can present as:
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| What can be tested in blood to give an indication of cobalt status? |
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| How can cobalt be supplemented? |
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