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− | **Commonest cause of infectious abortion in dairy cattle
| + | {{unfinished}} |
− | **Congenitally infected calves can have encephalomyelitis and paresis
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− | **Abortion usually occurs between 5-7 months of gestation but can occur as early as 3 months
| + | ==Description== |
− | **No other clinical signs in the cow
| + | Caused by the protozoan parasite [[Neospora|Neospora caninum]] and is the commonest cause of abortionin dairy cattle. |
| + | It also causes stillborn calves and congenitally infected calves can have encephalomyelitis and paresis.Abortion usually occurs between 5-7 months of gestation but can occur as early as 3 months. Often no other clinical signs are present in the cow. |
| **Repeat abortions possible in same cow (persistently infected) | | **Repeat abortions possible in same cow (persistently infected) |
− | '''Prevention and Control'''
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− | *Do not allow dogs access to calving cows, placental membranes and aborted or dead calves
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− | *Do not allow dogs to defecate in cattle feeding areas
| + | ==Signalment== |
| + | Neospora has been documented to infect cattle, sheep goats and the dog. |
| + | ==Diagnosis== |
| + | ==Clinical Signs== |
| + | ==Laboratory Tests== |
| + | ==Pathology== |
| + | Non-suppurative encephalitis is most commonly seen in aborted faeces. |
| + | |
| + | ==Treatment== |
| + | Do not allow dogs access to calving cows, placental membranes and aborted or dead calves |
| + | |
| + | Do not allow dogs to defecate in cattle feeding areas |
| + | |
| + | Identify and cull seropositive cattle, or do not breed from them or their progeny |
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− | *Identify and cull seropositive cattle, or do not breed from them or their progeny
| + | Select seronegative cattle for breeding |
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− | *Select seronegative cattle for breeding
| + | Vaccinate is possible but only in the USA. |
| + | It is a killed protozoal vaccine for healthy, pregnant cows and is given in the first 3 weeks of pregnancy and then every 3-4 weeks during gestation. |
| + | Revaccination with 2 doses should be undertaken during each subsequent pregnancy. |
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− | *Vaccinate
| + | ==Prognosis== |
− | **Only in the USA
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− | **Neoguard or Intervet
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− | **Killed protozoal vaccine for healthy, pregnant cows
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− | **Dosed in first 3 weeks of pregnancy and then every 3-4 weeks during gestation
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− | **Revaccination with 2 doses during each subsequent pregnancy
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| [[Category:Cattle]] | | [[Category:Cattle]] |
| [[Category:Tissue_Cyst_Forming_Coccidia]] | | [[Category:Tissue_Cyst_Forming_Coccidia]] |
| [[Category:To_Do_-_Caz]] | | [[Category:To_Do_-_Caz]] |