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Gross Pathology > Gross Pathology of Small Ruminants 2 > Flashcards

Gross Pathology of Small Ruminants 2 Flashcards

1
Q

What causes facial deformity and ulceration of skin and hard palate in sheep?

A

Pythium insidiosum

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2
Q

Cause of peri-nasal ulcerations and salivation (4)

A

Peste de petits de ruminant
Bluetongue**
Malignant catarrhal fever
Ovine pestivirus

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3
Q

Cause of nasal tumor

A

Enzootic nasal tumor virus 1 in sheep
ENTV 2 in goats
Jaagsiekte sheep retrovirus- recently reported, usually causes pulmonary carcinoma

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4
Q

Nasal bot of sheep

A

Oestrus ovis

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5
Q

Nasal bot of deer; weird lesion

A

Cephenemyia spp; aberrent migration to cause septic meningitis

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6
Q

Cause of necrotizing pharyngitis

A

Fusobacterium necrophorum

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7
Q

What lesions are seen with disseminated Bluetongue?

A

Lung congestion, edema, systemic vasculitis

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8
Q

Cause of aerodigestive morbillivirus in ruminants

A

Peste de petits de ruminant- interstitial pneumonia, GI ulceration

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9
Q

***Diffusely, uniformly enlarged sheep lung (failure to collapse, diffuse pneumonia)

A

Ovine progressive pneumonia (maedi visna, sheep lentivirus)

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10
Q

***Enlarged sheep lung with area of tumor

A

Jaagsiekte sheep retrovirus (betaretrovirus)
Endogenous

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11
Q

Other cause of masses in lungs (caudal, multifocal)

A

Sheep pox

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12
Q

Causes of shipping fever (bacterial)

A

Mannheimia hemolytica
Bibersteinia trehalosi
Mycoplasma mycoides subsp. capri in goats

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13
Q

Morph with shipping fever

A

Diffuse fibrinosuppurative and necrotizing bronchopneumonia

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14
Q

Cause of cranioventral bronchopneumonia with sharp demarcation

A

Mycoplasma ovipneumoniae

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15
Q

Cause of caudoventral pneumonia

A

Iatrogenic aspiration pneumonia

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16
Q

Lungworm to know (most common)

A

Muellerius capillaris

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17
Q

Morph with muellerius capillaris

A

Subpleural, nodular, granulomatous lesions (cannot see adults)

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18
Q

Cause of lungworms in caudal large airways

A

Dictyocaulus filaria

19
Q

What should you look for if renal infarcts?

A

VVE secondary to foot disease, mastitis, ruminal acidosis

20
Q

Cause of hydranencephaly in sheep?

A

Cache Valley Fever (bunyavirus)

21
Q

When do sheep get hydranencephaly?

A

Dam infected early in gestation

22
Q

Cause of cerebellar hypoplasia(3)?

A

CVFV or Schmallenberg
***Pestivirus- hairy shakers

23
Q

Name of False hellebore?

A

Veratrum Californicum

24
Q

Toxic principle of veratrum

A

cyclopamine- causes synophthalmia
Day 12-16 - cyclopia
Day 28-30 - chondrodysplasia (dwarfism)

25
What does Clostridium perfringens type D cause in sheep brain?
Bilateral necrosis of basal ganglia and thalamus***
26
C. perf type D key histo finding
Intramural/perivascular edema of arterioles
27
Cause of multifocal necrohemorrhagic rhombencephalitis
Listeria monocytogenes
28
The larval stage of which tapeworm infects the brain of sheep? DH?
Taenia multiceps; dog
29
What is the structure in the brain of sheep caused by taenia multiceps?
Cenuris- cyst containing protoscolices
30
Cause of yellow brain in sheep?
Polioencephalomalacia
31
What causes PEM?
Thiamine deficiency High sulfur diet Lead Salt toxicity
32
What weird thing does the brain do with PEM?
Fluoresces under UV light
33
Copper deficiency effect
Neuroaxonal degeneration (no white matter)
34
Lesion with spider lamb disease
Outward bowing of facial bones Long legs (varus and valgus deformities
35
Who is predisposed to arachnomelia?
Suffolk, Hampshires
36
Pathogenesis of arachnomelia
FGF-3 deficiency --> uncontrolled cartilage growth
37
Cause of multiple bone fractures
Osteogenesis imperfecta
38
Pathogenesis of osteogenesis imperfecta
decreased bone quality and quantity
39
Morph with vitamin D deficiency
Osteodystrophy with inadequate mineralization of cartilage
40
What causes osteopenia in these animals?
Starvation
41
What causes lymphohistiocytic polyarthritis in goats
Caprine arthritis and encephalitis virus (CAE), lentivirus
42
What causes suppurative polyarthritis in SR?
Mycoplasma synovitis
43
Tumor at tip of mandible
Ossifying fibroma

Gross Pathology (23 decks)

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