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000 - large animal infectious > OPPv > Flashcards

Flashcards in OPPv Deck (8)
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1
Q

(Ovine Progressive Pneumonia Virus)

  1. similar to what virus?
  2. most common Cx?
  3. what does + sero mean?
A
  1. CAEv
  2. poor milk production due to udder involvement

(can be asymptomatic though)

alsocan get death from lung involvement

  1. infection, doesn’t mean Cx are result
2
Q

(OPPv)

  1. transmission?
A
  1. horizontal (most common), vertical, and fomites
3
Q
  1. ewes get what?
  2. see on histo?
A
  1. hardbag (BOTH sides of udders firm and not hot)

produce little milk

  1. lymphocytes and monocytes, ^ smooth musc and fibrous CT
4
Q

(OPPv)

  1. what are the 4 forms?
A
  1. wt loss, mastitis, pneumonia (less common), arthritis

(so CAEv has kid neurlogic form but no wt loss - otherwise the same)

5
Q

(pneumonia form)

  1. lungs weight 2-5x more (fibrous CT) - rib impressions
A
6
Q

(arthritis form)

just like goats

A
7
Q

(Dx)

  1. hx and cx suggestive
  2. gold standard?
  3. usually use what?
  4. what else works that is cracy?
A
  1. immunoprecipitation
  2. serology
  3. Maedni Visna Elitest (ELISA) 99% sens/spec
8
Q

(Control)

why different that for CAEv

1-4. what four options?

A

not relient on intact CL - HPA axis used instead

  1. test and cull, repeat, repeat
  2. test and seprate (manage two flocks)
  3. depopulate and restock w/ virus free sheep
  4. genetics: 1:1 diplotype resistant (not completely though)