Respiratory Diseases of Nursery Pigs Flashcards
Porcine Reproductive and Respiratory Syndrome Virus (PRRS) 2 other terms:
Mystery pig disease, Blue ear pig disease
CS: late term sows: SMEDI
Porcine Reproductive and Respiratory Syndrome Virus (PRRS)
3 stages in Porcine Reproductive and Respiratory Syndrome Virus (PRRS)
- acute
- persistence
- extinction
PRRS: persistent infection wherein the virus is eventually cleared (100-145 DPI)
Chronic persistent infection
what PRRS stage: end of shedding, cleared
Extinction
what PRRS stage: viremia, target cells attacked
Acute
what PRRS stage: subclinical, decreased shedding
Persistence
control for PRRS:
“Herd closure” for ±26 wks
recovered animals develop immunity: what dz
PRRS
Mycoplasma pneumonia other term
Porcine enzootic pneumonia
Mycoplasma pneumonia CA
Mycoplasma hyopneumoniae
causes lethal pneumonia in piglets
Mycoplasma pneumonia
Lungs: concentrated on the apical Portions; what dz
Mycoplasma pneumonia
3 antibiotics for Mycoplasma pneumonia
Tiamulin, Tilmicosin, Tylosin
what dz has this lesion: Fatal fibrino-hemorrhagic and necrotizing pleuropneumonia
Porcine Pleuropneumonia/ APP infection
2 toxin virulence factors of Porcine Pleuropneumonia/ APP infection
RTX and Apx
what dz has this Cellular level lesion:
vascular leakage and thrombosis
Porcine Pleuropneumonia/ APP infection
what DZ:
High fever;
high morbidity (±100%),
mortality (± 1%)
Swine Influenza
2 types of receptors of Swine Influenza
human‐type receptor, avian‐type receptor
what dz: Excessive cytokine activity (“cytokine storms”) → typical lung inflammation and disease
Swine Influenza
