Cattle Dermatology Flashcards Preview

RUSVM LAM II Practice Questions > Cattle Dermatology > Flashcards

Flashcards in Cattle Dermatology Deck (91)
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1

What are the 4 species of lice that affect cattle?

Haematopinus eurysternus

Linognathus vituli

Solenptus capillatus

Damalinia bovis

2

Sucking lice can cause _______, especially in calves

anemia

3

______ lice tend to cause a rough shaggy hair coat

with patchy NON-pruritic alopecia

Biting lice

4

How is lice treated in cattle?

Avermectin/Ivermectin (Doramectin)

at 2 week intervals.

Must treat ALL animals

5

What are the 6 types of mites that affect cattle?

Psoroptes

Chorioptes

Psoregates

Demodex

Sarcoptes

Trombicula

6

This mite is more common in winter months and

results in decreased feed consumption, decreased weight gain,

and may predispose to resp. dz/stress.

Psoroptes

7

Lesions on the perineum and back of udders in cows

is known as

escutcheon

8

This mite is more common in the winter months

and causes escutcheon (lesions on the back of perineum and udders)

as well as intense pruritis.

Chorioptes

9

This mite causes mange in cattle, characterized by

intense pruritis, wrinkled skin, and wheals in the skin.

Will also see inflammation on the legs, udder, and perineum.

Sarcoptes

10

This mite is known as the "itch mite"

and is found in grass, hay, straw, or forage.

It is not a true parasite of the cow, but of the enviroment.

Trombicula

11

This fly lays eggs in fresh wounds. The maggots

bury deep into the wound.

This has been eradicated in the US and is reportable.

Cochliomyia homnivorax

SCREWWORM

12

The proper name for the

House Fly

Musca domestica

13

The proper name for the

Flesh Fly

Sarcophaga haemorrhoidalis

14

The proper name for the

Blue Bottle Fly

Calliphora erthrocephala

15

The proper name for the

Green Bottle Fly

Lucillia caesar

16

The proper name for the

Sheep Blow Fly

Phormia regina

17

The proper name for the

Secondary Screwworm Fly

Cochliomyia macellaria

18

The proper name for the

Face Fly

Musca autumnalis

19

This fly spread pinkeye bacteria by

feeding on secretions around the eyes.

Musca autumnalis (Face Fly)

20

The proper name for the

2 types of Horn Flies

Haematobia irritans

Stephanfilaria

21

This fly causes the most economic damage in the US and Canada.

Animals will stand in water and swish their tails

due to the intense irritation.

Haematobia irritans (Horn Fly)

22

Filarial dermatitis is transmitted by ______ flies

horn flies

23

Stephanfilaria causes Filarial Dermatitis.

Where do you see lesions on the cow if this is the cause?

Ventral midline

(Lesions are hairless and skin is thickened with fissures/cracks)

24

How are horn flies treated?

Pour-ons

25

The proper name for the

Stable Fly

Stomoxys calcitrans

26

The proper name for the

Horse Fly

Tabanus spp.

27

The proper name for the

Deer Fly

Chrysops spp.

28

These 3 flies bite, draw blood, and irritate,

and can transmit anaplasmosis

Stable Fly (Stomoxys calcitrans)

Horse Fly (Tabanus spp.)

Deer Fly (Chrysops spp.)

29

According to fly protection protocols,

when do you ear tag an animal with OP or pyrethroid?

When there is greater than

200-400 flies per animal

30

bio-balanced fly program

utilizes this predator to eat flies (fly pupae)

Trichogramma wasp