Quiz 2 Ruminants Skin and Reproductive Flashcards Preview

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Flashcards in Quiz 2 Ruminants Skin and Reproductive Deck (28):
1

what ages does paillomatosis affect most commonly?

yearlings and calves

2

Fibrous core covered with squamous cell epithelium and hyperkeratinization of the outer layers, and vary from:
Small firm to large cauliflowers, grey or black and rough to the touch.

Papillomatosis

3

Where on the body can you find papillomatosis

Teat, udders, head, neck, omasum, vulva, penis, anus

4

Where else does papillomatosis occur?

GI and bladder lesions progressing to squamous cell carcinoma

5

How does papillomatosis enter the body?

Abrasions

6

How do you treat papillomatosis

You dont!! spontaneous regression within 4-6 months.

7

Dx papillomatosis?

Clinical signs.

8

Bovine herpesvirus 2

Bovine mammillitis

9

What are your 2 forms of bovine mammillitis

1 bovine mammillitis

2 pseudolumpyskin

10

Mild fever with skin nodules on face, neck, back and perineum.

The nodules are flat with slightly depressed centers, involving on superficial layers of epidermis which undergo necrosis

Bovine Mammillitis

11

Whats economically important to remember about bovine mammillitis

milk yield can drop 10% and could have concurrent mastitis

12

What are your ddx for pseudolumpyskin?

Warts, cowpox, pseudocowpox, vesicular stomatitis and FMD

13

Control of Bovine Mammillitis

Arthropod transmission is suspected

milking machines need to be kept clean.

14

Parapoxvirus

Poxviridae

Pseudocowpox

15

Where is the world does pseudocowpox occur?

Common endemic Worldwide

16

What are the pathognomonic lesions for pseudocowpox

Horseshoe scabs

17

where on the body will you pseudocowpox?

Teats mainly but also
muzzles and the mouths of suckling calves

18

Bovine Herpesvirus 1

Infectious Pustular vuvlovaginitis and balanoposthitis

19

what spp of cow does ipv occur in?

dairy

20

What do you suspect when you see a cow who is painful to urinate, wide stance, swollen vuvla maybe discharge, and the vestibular mucosa is read with many small pustules

IPV and B

21

Dx of IPV and B

EM
IF of vesicular fluid
PCR

22

Controlling IPV and B?

Eliminate carrier bulls.
Vaccines do not prevent infection, just reduce incidence and severity of disease-DIVA

23

What are your 3 ddx for abortion in cattle?

BVD
IBR
Bluetongue

24

What are prions?

Proteins that have folded incorrectly, and since they are self monoclonal Ab can't distinguish them

25

What gene is it that mutates?

PrP gene resulting in different conformation, lesions, incubation and mortallity patterns

26

Prions are resistant?

Yes, to heat, UV radiation, and chemicals.

27

How can you reduce the infectivity of a prion?

Autoclaving at 132C for 90min, 1 M NaOH adn phenol extraction

28

How do prions cause spongiform damage and neuronal dysfunction?

They are resistant to endogenous proteases

They accumulate into aggregates called scrapie associated fibrils that form plaques