Skin diseases - pigs

Question 1

giev some (3) examples of spirochetes which often cause skin lesions?

Answer 1

1. borrelia (lymes dz)
2. lepto
3. treponemes (digital dermititis)

Question 2

what is the prevalence of porcine skin lesions?

Answer 2

40%

Question 3

name some non-infectious causes of lesions?

Answer 3

1. vices (biting)
2. shoulder sores
3. abrasions
4. erythema

Question 4

name 2 parasites which can be a source of skin lesions

Answer 4

sarcoptic mange
haematopinous suis
(and flies too)

Question 5

infectious agents such as bacteria and viruses can cause skin lesions, give some examples

Answer 5

1. staph hyicus –> greasy pig dz
2. septicaemia (salmonella, erysipelas, PRRS v, swine fever, haemophilus parasuis (glassers dz))
3. swine pox
4. ringworm
5. PCV2 (PDNS)

Question 6

how much more likely is tail biting in un-docked pigs?

Answer 6

x3

Question 7

where are stifle sores most commonly seen?

Answer 7

hih density grower/finisher

Question 8

what can cause erythema?

Answer 8

sunburn
scalding
hyperkeratosis (over humidity)

Question 9

how would you treat a sarcoptes scabei var suis infections?

Answer 9

deep skin scrape

avermectins

Question 10

what is glassers dz?

Answer 10

haemophilus parasuis (URT commensal)
affects smooth surfaces
polyserositis
meningitis
arthritis
high morb and mortality

Question 11

describe the disease of greasey pig

Answer 11

staph hyicus
exudatitve epidermatitis
exfoliative toxin abs by skin, also damages kidneys/liver
lose keratino cell-cell adhesion
non- pruritic

Question 12

describe the transmission and survival stages of staph hyicus?

Answer 12

x’plies in sow vagina
infected at birth
inc risk in humid environment

Question 13

descr treatment of greasy pig

Answer 13

amoxicillin
lincomycin
mild - use savlon

Question 14

when in combo with what other dz does swine pox become significant clinically

Answer 14

greasy pig

Question 15

what are the 2 types of ‘ringworm’ that pigs can get and desc the differences

Answer 15

true ringworm = trichophyton mentagrophyte, rodents spread

false ringworm = pityriasis rosea. just appears, goes by 20wo

Question 16

what is the congenital condition which may result in piglet ‘missing’ areas of skin

Answer 16

epitheliogenesis imperfecta

Question 17

what is PDNS and what causes it

Answer 17

PCV 2
porcine derma and nephropathy syndrome
15% mort
covered in red spots and kidneys also effected

Question 18

what is the risk of treponeme infection?

Answer 18

interspecies transmission as only 3 types. leads to bov DD and CODD too.

Question 19

what is the significance of brachyspira hyodysenteriae in skin disease?

Answer 19

it causes swine dystentry
2ry infection v likely
bloody mucoid d++++
weaners/growers get erythema!