Pigs

Question 1

Malignant edema

Answer 1

Clostridium septicum maybe cl perfringens type A (mixed Cl infection)
G+, spore forming, anaerobe
found in soil and GI tract

Question 2

Glassers disease

Answer 2

Haemophilus parasuis
G-
commensal

Question 3

Greasy pig

Answer 3

Staphylococcus hyicus
G+, non-motile, aerobe

Question 4

Erysipelas

Answer 4

Erysipelas rhusiopathiae
G+, non motile, anaerobe
ubiquitous 50% adults
very resistant 1-5m in faeces, 9m carcasses, 3y 5 degrees soil

Question 5

Classical swine fever

Answer 5

CSF virus, pestivirus genus
enveloped RNA, related to BVDV
easily killed in environment but lives in frozen meat 4y

Question 6

African Swine Fever

Answer 6

Asfivirus from family Asfarviridae
enveloped, double strand DNA
11d in faeces, 15y in frozen meat, stable in wide pH range

Question 7

swine dysentery

Answer 7

Brachyspira sp - hyodysenteriae, hampsoni and suanatina
anaerobic spirochetes, G-
occupy special niches in LI of birds and mammals

Question 8

Streptococcus suis

Answer 8

G+, non-motile, facultatively anaerobic
normal in tonsils
pathogenic, weakly pathogenic and virulent
capsular polysaccharide is most important virulence factor

Question 9

transmissible gastroenteritis

Answer 9

TGE virus, Coronavirus family
survives in water/sewage for days at 25 and weeks at 4

Question 10

PRCV

Answer 10

porcine respiratory coronavirus
naturally occurring deletion mutant of TGEV

Question 11

inclusion body rhinitis

Answer 11

porcine cytomegalovirus
herpesviridae family
ubiquitous in nearly all pigs

Question 12

PRRS

Answer 12

PRRSV arteriviridae family
single strand RNA, enveloped
stable when frozen

Question 13

enzootic pneumonia

Answer 13

Mycoplasma hyopneumoniae
easily inactivated in environment
small, no cell wall, pleomorphic

Question 14

atrophic rhinitis

Answer 14

B.bronchiseptica (non-progressive)
toxigenic P.multocida (progressive)

Question 15

pleuropneumoniae

Answer 15

Actinobacillus pleuropneumonaie
G-, 2 biotypes with 15 serotypes
4 exotoxins

Question 16

blackleg

Answer 16

clostridium chauvoei
G+, spore forming, anaerobic
natural in GI tract, spores remain in soil for years

Question 17

porcine circoviruses

Answer 17

PCV-1 = non pathogenic for swine
PCV-2 = systemic/repro disease, subclinical or PDNS
PCV-3 = repro prob, multi systemic vasculitis, PDNS

Question 18

reproductive disease

Answer 18

PCV- 2 or 3

Question 19

systemic disease

Answer 19

PCV-2
non-enveloped, single strand DNA
ubiquitous and resistant for months

Question 20

colibacillosis

Answer 20

enterotoxigenic strains of Escherichia coli
F4, 5, 6, 18 and 41 produce enterotoxins

Question 21

edema disease

Answer 21

haemolytic E.coli producing F18 fimbrial adhesions and Shiga toxin

Question 22

PDNS

Answer 22

porcine dermatitis and nephropathy syndrome
PCV
non-enveloped, single strand DNA
resistant to disinfection and irradiation

Question 23

post weaning disease

Answer 23

E.coli that has genes for enterotoxins and F18 fimbrial adhesions