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Farm Animal Year 4 > Dermatology > Flashcards

Dermatology Flashcards

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1
Q

which ectoparasite causes

pruritic patterned hair loss head neck flanks and shoulders and back
heavy infections cause anaemia in young calves

A

lice eg linognathus vituli

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2
Q

which ectoparasite causes

pruritis, rubbing and hair loss

legs, feet, tail base, caudal surfaces of the udder

dx via skin scrapes> capillary ooze on edge of lesions
non burrowing

A

psoroptes and chorioptes

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3
Q

which ectoparasite causes

pruritis, rubbing and hair loss

neck and face

dx via skin scrapes> capillary ooze on edge of lesions
burrowing

A

sarcoptes

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4
Q

which burrowing mite has pointed mouth parts?

A

psoroptes

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5
Q

which burrowing mite has trumpet shaped pedicle

A

chorioptes

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6
Q

treatment of mange mites?

A

synthetric pyrethroids

macrolytic lactones

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7
Q

which type of animals are more likely to get mange?

housed animals
animals out in muddy pasture

A

housed animals

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8
Q

cause of lumpy jaw?

A

Actinomyces bovis

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9
Q

Cause of wooden tongue?

A

actinobacillus ligniersii

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10
Q

what is streptothricosis?

aetiological agent?

A

rain scald

Dermatophilus congolensis

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11
Q

which site is common for acute cellulitis and abscess formation

actinobacilli (truperella) oft cause

A

lower jaw and popliteal LN

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12
Q

treatment for rain scald?

A

topical disinfectant
oxytetracylin/ penicillin
dry environemnt

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13
Q

Cause of ringworm in cattle?

sensitive to woods lamp test?

dx?

A

Trichophyton verrucosum
no

hair pluck from edge of lesion

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14
Q

tx for ringworm

A

topical enilconazole
cleaning with chlorhexidine/ iodine
UV sensitive
spontaneous resolution

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15
Q

bovine papular stomatitis affects which part of cow?

A

muzzle and lips

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16
Q

bovine herpes mamillitis affects which part of cow?

A

teats and udder

17
Q

pyrexia
depression
lameness
vesicles on muzzle, tongue, nostrils, udder, feet

A

foot and mouth top ddx

18
Q

poor growth rates

brown tinged coat with spectacles

A

copper deficiency/ molybdenum toxicity

19
Q

what is a primary cause of photosensitisation

A

photodynamic agents: st johns wort

20
Q

what is a secondary cause of photosensitisation

A

liver damage+ accumulation of phylloerythrin

eg ragwort

21
Q

what is a lice that affects sheep

A

Bovicola ovis

22
Q

tx for bovicola ovis

A

not usually required
topical SPs and MLs
diazinon dip

23
Q

aetiological agent sheep scab

A

Psoroptes ovis

24
Q

Sheep
Concentric wool loss with scaling and crusting.
Profound dermatitis, secondary skin infections,
Disrupted feeding, condition loss, weakened immunity etc.
Intense pruritis and discomfort (fitting)

A

Sheep scab

Psoroptes ovis

25
Q

how to diagnose sheep scab

A

skin scrapes from edge of crusting lesion

serum antibody > 2 weeks infection

26
Q

tx for sheep scab

A

whole flock needs to be treated
OP (diazinon) dip

can have injectable Ls
avoid previous housing pastures> 17 days

27
Q

is sheep scab notifiable

A

yes in scotland

manditory tx in engand and wales

28
Q

Corynebacterium pseudotuberculosis causes what in sheep?

A

caseous lymphadenitis

29
Q

most common place for ringworm in lambs?

A

face

30
Q

mouth, feet and teat lesions
hungry lambs
mastitis ewe
self limiting disease

A

orf

31
Q

control for orf?

A

scabivax vaccine for already infected flocks

32
Q

intense pruritis, wool break and sometimes neuro signs

A

Scrapie

NOTIFIABLE

33
Q

Cause of wool break?

A

nutritional/ condition/ stress/ systemic disease

34
Q

how is

new forest eye
BVDV
Summer mastitis

spread?

A

flies

35
Q

how is babesiosis and Q fever spread?

A

tick borne

36
Q

how is blue tongue and schmallenberg spread?

A

midges

37
Q

which disease is notifiablem extreme pruitis and self injury

is nick named pseudo rabies

A

Aujeskys disease

Farm Animal Year 4 (12 decks)

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