Pigs Flashcards
Malignant edema
Clostridium septicum maybe cl perfringens type A (mixed Cl infection)
G+, spore forming, anaerobe
found in soil and GI tract
Glassers disease
Haemophilus parasuis
G-
commensal
Greasy pig
Staphylococcus hyicus
G+, non-motile, aerobe
Erysipelas
Erysipelas rhusiopathiae
G+, non motile, anaerobe
ubiquitous 50% adults
very resistant 1-5m in faeces, 9m carcasses, 3y 5 degrees soil
Classical swine fever
CSF virus, pestivirus genus
enveloped RNA, related to BVDV
easily killed in environment but lives in frozen meat 4y
African Swine Fever
Asfivirus from family Asfarviridae
enveloped, double strand DNA
11d in faeces, 15y in frozen meat, stable in wide pH range
swine dysentery
Brachyspira sp - hyodysenteriae, hampsoni and suanatina
anaerobic spirochetes, G-
occupy special niches in LI of birds and mammals
Streptococcus suis
G+, non-motile, facultatively anaerobic
normal in tonsils
pathogenic, weakly pathogenic and virulent
capsular polysaccharide is most important virulence factor
transmissible gastroenteritis
TGE virus, Coronavirus family
survives in water/sewage for days at 25 and weeks at 4
PRCV
porcine respiratory coronavirus
naturally occurring deletion mutant of TGEV
inclusion body rhinitis
porcine cytomegalovirus
herpesviridae family
ubiquitous in nearly all pigs
PRRS
PRRSV arteriviridae family
single strand RNA, enveloped
stable when frozen
enzootic pneumonia
Mycoplasma hyopneumoniae
easily inactivated in environment
small, no cell wall, pleomorphic
atrophic rhinitis
B.bronchiseptica (non-progressive)
toxigenic P.multocida (progressive)
pleuropneumoniae
Actinobacillus pleuropneumonaie
G-, 2 biotypes with 15 serotypes
4 exotoxins
blackleg
clostridium chauvoei
G+, spore forming, anaerobic
natural in GI tract, spores remain in soil for years
porcine circoviruses
PCV-1 = non pathogenic for swine
PCV-2 = systemic/repro disease, subclinical or PDNS
PCV-3 = repro prob, multi systemic vasculitis, PDNS
reproductive disease
PCV- 2 or 3
systemic disease
PCV-2
non-enveloped, single strand DNA
ubiquitous and resistant for months
colibacillosis
enterotoxigenic strains of Escherichia coli
F4, 5, 6, 18 and 41 produce enterotoxins
edema disease
haemolytic E.coli producing F18 fimbrial adhesions and Shiga toxin
PDNS
porcine dermatitis and nephropathy syndrome
PCV
non-enveloped, single strand DNA
resistant to disinfection and irradiation
post weaning disease
E.coli that has genes for enterotoxins and F18 fimbrial adhesions