Ruminant Skin DIseases

Question 1

Diseases characterized by pruruitis

Answer 1

psoroptic mange
chorioptic mange
sarcoptic mange
Demodectic Mange
insects like flies
pseudorabies -

Question 2

Sarcoptid Mange etiology

Answer 2

sarcoptes scabii

Question 3

Sarcoptid Mange lifecycle

Answer 3

10-17 d life cycel and lay eggs in epidermis.

Question 4

Sarcoptid Mange

Answer 4

head, ears and neck affected

skin scrapings - hard to identify

Question 5

Sarcoptid Mange signs and treatment

Answer 5

pruritis, scaling, crusting, ulceration, alopecia

using avermectins – watch for the BC usual farm dogs

Question 6

DEmodectic mange (Cigar) who it hits and where

Answer 6

very host specific
hits bovis, ovis, capri,
in the tropical areas

Question 7

DEmodectic mange (Cigar) lesions

Answer 7

nodular lesions on the face, shoulder and neck

white and caseous lesions.

Question 8

how to control flies?

Answer 8

parasitic wasps seem to work
chemicals
avermectins (cylence)
fly tags
cattle rubs/dust bags
the pour ons work very well.

Question 9

Fly species

Answer 9

stomoxys calitran
musca domestica
musca autumnalis
haematobia irritans

Question 10

Which flies are biting?

Answer 10

the stomoxys and haematobia

Question 11

Pseudorabies hits

Answer 11

pigs, but associated with ruminants as well

Question 12

Pseudorabies reportability

Answer 12

when suscpected!!

Question 13

Causes of nodules and swellings of the skin

Answer 13

dermatophytosis (ringwom)
Hypersensitivty
Warble Flies
Blow Flies
Melanomas
Cysts
Tuberculosis
Lump Skin disease
Anthrax

Question 14

Diseases characterized by ulcers and erosions

Answer 14

FMD, VSV, Bovine

Question 15

Diseases characterized by pustules and pupules

Answer 15

papillomas
Orf - contagious ecthyma
Pseudocowpox
Bovine herpes mammillitis

Question 16

RIngworm Dx

Answer 16

?

Question 17

Ringworm etiology

Answer 17

trichophyton verrucosum

Question 18

Ringworm transmision

Answer 18

fomites, direct contact.

Question 19

Hypersensitivity skin disorders causeL

Answer 19

transient wheals, on skin/mm

may cause pruritis

Question 20

Hypersensitivity skin disorders causes

Answer 20

Drug eruption
Anaphylaxis
Milk allergy

Question 21

Hypersensitivity skin disorders Anaphylaxis looks like

Answer 21

lifethreatening
initial derm signs but then systemic
Give Epinephrine via slow IV

Question 22

How to treat Hypersensitivity skin disorders anaphylaxis

Answer 22

epinephrine at 0.1 mg/ml

Question 23

Hypersensitivity skin disorders milk allergy happens because:

Answer 23

dry off causes increased udder pressure –> milk proteins leak –> immune reaction.

Question 24

treating milk allergy of Hypersensitivity skin disorders

Answer 24

anti-histamines

culling

Question 25

Drug eruption in Hypersensitivity skin disorders is proven by:

Answer 25

histort and clinical signs. Don’t try to prove this by re-trial.

Question 26

Treatment of Drug eruption in hypersensitivity derma reactions

Answer 26

Anti-histamines or steroid (but if carrying a calf, maybe not)

Question 27

Etiologies of warbles

Answer 27

hypoderma bovis and hypoderma lineatum

Question 28

Warbles clinical signs

Answer 28

cysts with blow holes (3rd stage larvae)

specific organ signs for where they migrate

Question 29

Treatment of warbles

Answer 29

careful manual removal - don’t pop or anaphylaxis

avermectins - not in dec, jan, feb, Make sure the Tx is in March 1 and April 15.

Question 30

Where do blowflies like?

Answer 30

wounds, wet/dirty

Question 31

TreaTment;control of blow fly strike

Answer 31

manage wound
avermectins
control contamination - shear and mulesing (don’t do)
avoid castration, shearing, docking, and lambing in the summer

Question 32

Where might we see cysts?

Answer 32

in nubian wattles.