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19 Cards in this Set

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What are the target rates for lambing and abortion in sheep herds?
Lambing rate 90-95%
Visible abortions <5% (if more, investigate promptly)
Which abortion causing diseases are zoonotic?
Chlamydophila Abortus
Ovine Toxoplasmosis
Ovine campylobacterosis
Coxiella burnetti (Q fever)
What are the major causes of abortion in US sheep?
Campylobacter - 38%
Toxoplasmosis - 30%
Chlamydia - 7%
How would you begin a control program for abortions during a season in which lambing is already well underway?
Control measures: ionophores, vaccines, and antibiotics (tetracyclines)
Which samples should be submitted to the diagnostic lab for diagnosis or abortion?
a) Placenta
b) Fetus (lungs, gastric contents, liver, kidney, etc.)
c) Dam's blood
Does Campylobacteriosis make the ewe sick?
No
Which abortifacient disease may have doughnut like liver lesions in the fetus?
Ovine Campylobacterosis
At what stage of gestation do most Chlamydiophila associated abortions occu?
Late term abortions - "abortion storms"
In what abortifacient disease are intracytoplasmic elementary bodies seen?
Chlamydia = "Enzootic Abortion of Ewes"
What organism causes Q-fever?
Coxiella burnetti
Which 'system' does bluetongue virus have a predilection for?
GI tract?
Name two pestiviruses that are related to the border disease virus
Bovine viral diarrhea virus
Classical swine fever virus
Which species are definitive hosts for Toxoplasma gondii?
Kitty cats
What are the most common abortifacient agents in goats in the US?
Chlamydia
Toxoplasmosis
Why are Angora goats susceptible to abortion?
Hyperactive adrenals initiate parturition prematurely.
What does the term 'cloud burst' refer to?
Hydrometra: an accumulation of sterile mucoid fluid in the uterus associated with retained CL and no pregnancy
Define male pseudohermaphrodite
A male pseudohermaphrodite has male gonads but a female internal sex tract. Has testicles (abdominal or partially descended) but generally female external genitalia. Has female genotype (XX). Always sterile.
What is the genotype of most polled intersex goats?
XX
How is intersex diagnosed?
External examination (especially of the clitoris), surgical exploration, karyotyping, or PCR