VBS 3 Micro Flashcards
Actinobacilus
pleuropneumonia
- Gram -
- pleiomorphic
- facultative anaerobe
- Catalase +/-
- Oxidase -
–> FIBRINOUS bronchopneumonia + pleurapneumonia
Pasturella multocida
pneumonic pasturellosis
- Gram - rod
- facultative anaerobe
- Catalase +
- Oxidase +
- non-motile
- ZOONOTIC
- blood agar !!
- can have verticle transmission
–> damage to microvasculature in lungs
–> neutrophil infiltration
Bordetella broncoseptica
atrophic rhinitis
- Gram - rod
- obligate aerobe
- Catalase +
- Oxidase +
- motile
- ZOONOTIC
–> pili attach to respiratory epithelium
–> causes CILIOSTASIS
–> nasal turbinate atrophy
Mycoplasma hyopneumoniae
Enzootic/Mycoplasmal pneumonia
- Gram - (no cell wall)
- pleiomorphic
- non-motile
- fastidious
- glucose fermenting
–> cattarrhal or suppurative bronchopneumonia
–> CILIOSTASIS
–> “thumping”
–> atelectasis
Haemophilus parasuis
Glassers Disease
- Gram - rod
- pleiomorphic
- facultative anaerobe
- non-motile
** resistant to: tetracycline, erythromycin, penicillin
** treat with: cephalosporin, fluoroquinolone
- use chocolate agar
–> vasculitis, arthritis, serositis, meningioencephalitis
–> SUPPURATIVE bronchopneumonia
Streptococcys suis
Streptococcal pneumonia
- Gram + chains
- spherical
- nonmotile
- Catalase -
- Oxidase +
- beta-hemolytic!
- ZOONOTIC
–> ingestion, inhalation
–> enlarged lymph nodes
–> fibrinpurulent meningitis
- petechial hemorrhage
- arthritis
Mycobacterium bovis/avium
Tuberculosis
- Gram + rod
- aerobic
- acid fast
- non-motile
- ZOONOTIC
–> GRANULOMATOUS pneumonia
Mycobacterium bovis/avium
Tuberculosis
- Gram + rod
- aerobic
- acid fast
- non-motile
- ZOONOTIC
–> GRANULOMATOUS pneumonia
Pseudorabies/Aujesky’s Disease
suid-herpes I
- herpesvirus
- DS DNA
- enveloped
–> non-suppurative meningioencephalitis
Inclusion Body Rhinitis/Cytomegalovirus
suid-herpes II
- herpesvirus
- DS DNA
- enveloped
- linear
- transmission: direct or indirect, if vertical, will lead to mummified or weak piglets
–> targets CD8 - replicates in nasal mucosa
- rhinitis, nasal discharge
- petechial hemorrhage
- lymphadenopathy
Porcine circovirus
*circoviridae
- SS DNA
- non-enveloped
- icosahedral symmetry
- replicates in fetal myocardiocytes
- found in zona pellucida in free embryos
–> PCV2: resp and repro disorders
–> Type III immune complex
–> lymphohistiocytic to granulomatous inflammation
Porcine parvovirus
- SS DNA
- non-enveloped
- icosahedral symmetry
- linear
–> early embryonic death or mummified fetus
Porcine Respiratory/Reproductive Syndrome (PRRS)
arterivirus
- SS (+) RNA
- enveloped
- isometric nucleocapsid
- highly infectious, NOT contagious
–> targets pulmonary intravascular macrophages + pulmonary alveolar macrophages
–> INTERSTITIAL pneumonia
Classic Swine Fever/Hog Cholera
pestivirus –> flaviviridae
- SS (+) RNA
- enveloped
- eradicated in the US
–> ecchymosis and petechia
Vesicular xanthema
vesivirus –> calicivirus
- SS (+) RNA
- non-enveloped
- clinically indistinguishable from FMD
