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SWINE FDV EXAM > Nursery 2 : DZ > Flashcards

Nursery 2 : DZ Flashcards

1
Q

PRRS is caused by what virus

A

arterivirus

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2
Q

lung characteristic for PRRS

A

diffused intersittial pneumonia
slight rubbery not consolidated

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3
Q

what stages of PRRS: end of shedding, cleared

A

extinction

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4
Q

what stages of PRRS: sublicnical, decreased shedding

A

persistence

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5
Q

what stages of PRRS: viremia,

A

acute

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6
Q

how many DPI Chronic persistent PRRS infection: persistent infection wherein the virus is eventually cleared

A

100-145

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7
Q

where do PRRS replicate

A

Macrophage, lymphoid tissue

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8
Q

PRRS Characteristic lesion

A

interstitial pneumonia + lymph node enlargement

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9
Q

prevention and control for PRRS

A

herd closure for 26 wks
partial depopulation

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10
Q

Lesions are concentrated on the apical
portions of the lung

A

mycoplasma pneumoniae

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11
Q

CA of swine mycoplasma

A

Mycoplasma hyopneumoniae

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12
Q

Mycoplasma infect and reproduce in/around

A

resp villi

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13
Q

Porcine Pleuropneumonia/ APP infection CA

A

Actinobacillus/haemophilus pleuropneumoniae,

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14
Q

Causes fatal fibrino-hemorrhagic and necrotizing pleuropneumonia; lung hemorrhaging, fibrinous exudation

A

Porcine Pleuropneumonia/ APP infection

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15
Q

causes locally extensive dorsal diaphragmatic pneumonia

A

APP

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16
Q

virulence toxin factors of APP

A

RTX and Apx toxins

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17
Q

drugs for APP infections

A

enrofloxacin, tiamulin, lincomycin, tilmicosin

18
Q

swine influenza is zoonotic

A

t

19
Q

Influenza viruses have a wide range of hosts

A

t

20
Q

IAV subtypes are defined by their ___) and __

A

Hemagglutinin (H1-18)
Neuraminidase (N1-10) glycoproteins

21
Q

affects upper and lower respiratory tract of human and swine

A

human-type receptor

22
Q

found in the lungs of both species

A

avian‐type receptor

23
Q

where do swine influenza replicates

A

epithelial cells of the upper and lower respiratory tract of pigs

24
Q

swine influenza has high morb and mort

A

false. morb only

25
Q

Swine influenza virus excretion and transmission occur exclusively via the

A

respiratory route

26
Q

rotavirus species reported in swine

A

a,b,c

27
Q

how many species of rotavirus are there?

A

10

28
Q

rotavirus can be involved in enteritis during the first ___ of life

A

5 wks

29
Q

The sow can be the source of rotavirus; upon depletion of protective IgM in milk clinical infection

A

IgA

30
Q

where do rotavirus replicates

A

small intestinal proximal villi, resulting in villous blunting and atrophy

31
Q

what do RV targets

A

epithelial cells of the small intestinal jejunal and ileal tissues;

32
Q

IP of RV

A

24-48 hr incubation period

33
Q

rotavirus can be shed in feces

A

true

34
Q

established enteric pathogens of sucklings

A

Clostridium perfringens type C
C. difficile

35
Q

cause of enteritis in other mammals

A

C. perfringens type A:

36
Q

divided into 7 toxino- types (A to G) based on the production of 6 major toxins

A

c. perfringens

37
Q

main virulence factor of C. perfringens type C

A

CPB toxin

38
Q

Piglets develop hemorrhagic diarrhea 8–22hours after exposure to this

A

Clostridium perfringens/difficile

39
Q

drugs for Clostridium perfringens/difficile

A

toxoid antibiotics (e.g. penicillin, ceftiofur)

40
Q

enteric infection syndromes

A

neonatal hemorrhagic and necrotic enteritis

necrotizing enteritis

necrotizing necrotic enterityphlocolitis

41
Q

histotoxic infection syndrome

A

gas gangrene

42
Q

neurotoxic infection syndrome

A

blackleg
tetanus
botulism

SWINE FDV EXAM (10 decks)

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