Specimen Submission for Abortion Investigation
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Questions and Answers

What is the most commonly observed problem associated with Neosporosis?

  • Infection in sheep
  • Paraparesis in puppies
  • Abortion in cattle (correct)
  • Myelitis in horses
  • Which protozoal parasite is primarily responsible for Neosporosis in horses?

  • N caninum (correct)
  • Sarcocystis neurona
  • N hughesi
  • Toxoplasma gondii
  • Where is Neospora caninum found?

  • Exclusively in dogs
  • Only in wild animals
  • Worldwide distribution (correct)
  • Restricted to North America
  • Why are there no approved treatments for Neosporosis in cattle?

    <p>Industry factors like low profit margins</p> Signup and view all the answers

    What is the prognosis for puppies with Neospora infection if hindlimb paresis with atrophied, rigid limbs is present?

    <p>Poor</p> Signup and view all the answers

    What is a suggested strategy used by large dairies to protect feedstuffs from Neospora contamination?

    <p>Erecting dog-proof fences around feed storage areas</p> Signup and view all the answers

    Why is complete eradication of Neospora from a herd usually impractical?

    <p>It is biologically challenging</p> Signup and view all the answers

    What is recommended to reduce the risk of dogs becoming infected and shedding Neospora oocysts on the farm?

    <p>Discarding placentas properly</p> Signup and view all the answers

    What technique can be used for seropositive cows with valuable genetics to prevent endogenous transmission of Neospora?

    <p>Embryo transfer to Neospora-seronegative surrogates</p> Signup and view all the answers

    Why is serologic testing of farm dogs seldom useful in relation to Neospora infection?

    <p>Seropositive dogs have reduced likelihood of shedding oocysts</p> Signup and view all the answers

    What is the primary mode of exogenous transplacental transmission of Neospora caninum in cattle described in the text?

    <p>Consumption of infected dog tissues</p> Signup and view all the answers

    What is the primary factor positively associated with both endemic and epidemic abortion patterns in cattle due to neosporosis?

    <p>Presence and number of dogs</p> Signup and view all the answers

    How does neosporosis primarily manifest in dairy herds compared to extensively grazed beef cattle?

    <p>Higher prevalence due to use of mixed rations</p> Signup and view all the answers

    What is the primary mode of transmission to pregnant cattle causing epidemic abortions?

    <p>Consumption of infected canine feces</p> Signup and view all the answers

    Why may congenitally infected heifer calves be retained in the herd according to the text?

    <p>Most infections are subclinical</p> Signup and view all the answers

    What is the primary reason for diagnostic efforts focusing on an array of possible causes for abortions in cattle?

    <p>To diagnose diseases other than neosporosis</p> Signup and view all the answers

    What specimens should be submitted to exclude other causes of abortion if it is impractical to submit the entire fetus?

    <p>Formalin-fixed specimens of heart, kidney, spleen, and adrenal gland</p> Signup and view all the answers

    Which antibody level in the aborting dam has greater predictive value for neosporosis abortion?

    <p>High seropositive reactions</p> Signup and view all the answers

    What is considered a nearly specific lesion for neosporosis abortion in cattle?

    <p>Multifocal cerebral necrosis surrounded by nonsuppurative leukocytic reaction</p> Signup and view all the answers

    When is neosporosis generally excluded in dams?

    <p>When they are not seropositive</p> Signup and view all the answers

    What can be used as an alternative or complementary method to determine if neosporosis is a major reproductive problem in a herd?

    <p>Serological testing of multiple cows or heifers</p> Signup and view all the answers

    How does Toxoplasmosis compare to Neosporosis with regards to abortion in cattle?

    <p>Toxoplasmosis is rare or nonexistent in cattle</p> Signup and view all the answers

    'PCR may be necessary to distinguish between oocysts of N caninum and H heydorni.' What is the importance of this statement?

    <p>'H heydorni has not been associated with systemic disease in dogs like N caninum'</p> Signup and view all the answers

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