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NAVLE > Poultry > Flashcards

Poultry Flashcards

1
Q

Infectious laryngotracheitis

A
  • acute, highly contagious , herpes virus characterized by severe dyspnea, coughing, and rales
  • high morbidity
  • recovered becomes carriers ( most important vector )
  • adults should be vaccinated immediately in outbreak
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2
Q

Infectious laryngotracheitis

agent

A

alpha herpes virus

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3
Q

Infectious laryngotracheitis

highly suggestive finding

A
  • hemorrhagic expectorations
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4
Q

Infectious laryngotracheitis

Dx

A
  • real time PCR

- histopath

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5
Q

Infectious laryngotracheitis (necropsy)

A
  • caseous exudate and blood in trachea
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6
Q

Infectious laryngotracheitis (definitive dx)

A

intraNUCLEAR inclusion bodies in tracheal epithelium

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7
Q

ddx (Infectious laryngotracheitis)

A

diphtheritic form of fowlpox

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8
Q

Infectious bronchitis

agent

A

corona virus

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9
Q

Infectious bronchitis

clinical presentation

A
  • highly contagious ( via aerosol / ingestion )
  • cough, sneeze, facial swelling
  • mucoid exudate in bronchi, thickened air sacs +/- interstitial nephritis
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10
Q

Infectious bronchitis

(ddx)* clinically indistinguishable from

A
  • Newcastle disease
  • infectious laryngotracheitis
  • infectious coryza
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11
Q 
Infectious bronchitis 
( def dx )
A

viral isolation after 3-5 serial passages in chick embryo

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12
Q

Fowlpox (diphtheritic form)

agent

A

fowl pox virus

chicken and turkey

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13
Q

Fowlpox (diphtheritic form)

A
  • In the diphtheritic form, which affects the upper GI and respiratory tracts, lesions occur from the mouth to the esophagus and on the trachea.
  • lesions develop on the mucous membranes of the mouth, esophagus, pharynx, larynx, and trachea (wetpox or fowl diphtheria).
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14
Q

Fowlpox (diphtheritic form)

transmission

A
  • contact through abrasions of the skin
  • aerosol
  • mosquitos and other biting insect vectors
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15
Q

fowlpox ( cutaneous form )

characterized by

A

characterized by nodular lesions on various parts of the unfeathered skin of chickens and on the head and upper neck of turkeys

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16
Q

Fowlpox (def dx)

A
  • affected tissues stained with H&E reveals eosinophilic cytoplasmic inclusion bodies.
  • ** EPITHELIAL HYPERPLASIA WITH EOSINOPHILIC intraCYTOPLASMIC INCLUSION BODIES ( BOLLINGER BODIES )
17
Q

Avian chlamydiosis

Def dx

A
  • liver with LARGE, GRANULAR BASOPHILIC intraCYTOPLASMIC INCLUSIONS
18
Q

Fowl Cholera (agent)

A

Pasteurella multocida

19
Q

Fowl Cholera (dx)

A

gram negative bacteria in blood or tissues (pasteurella multocida)

20
Q

Why can’t chickens be housed with turkeys

A
  • Turkeys become clinical from a disease, while chickens are not
  • protozoa = Histomonas meleagridis
  • parasite within the protozoa =
    Heterakis gallinarum
  • rounded necrotic lesions of the liver and marked inflammatory changes
21
Q

Knemidocoptes mutans

A
  • “ scaly leg mite” (chickens, pheasants, pigeons)
  • lesions primarily on legs and unfeathered parts —-> progress to appear thickened and encrusted
    • irritation —> feather picking
      • short legged, round, up to 0.5 mm in diameter ( adult females)
    • back yard flock with thickened, encrusted skin on the legs—> found mite on scrape
    • adult female without suckers
    • adult male with suckers
22
Q 
Knemidocoptes mutans 
(tx)
A

ivermectin

23
Q

Dermanyssus gallinae

A

“ Red Mite “

- nocturnal feeders
- ** severe infestation —> anemia and decreased reproductive potential

tx - insecticides

24
Q

Laminosioptes cysticola

A
  • “ SQ mite”

- 1-3 mm nodular SQ lesions

25
Q

Ornithonyssus sylvarium

A
  • “northern fowl mite”

- feathered region around the vent affected

26
Q

Trombicula alfreddugesi

A
  • “common chigger of birds”
  • attach to wings, breasts, neck ( poultry )
  • heavy infestation —> weakness, anorexia, death

NAVLE (27 decks)

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