Respiratory Disease of Pigs Flashcards
What factors affect resp disease development in pigs?
Environment
Management
Breed and age
Exposure to pathogens
What changes at weaning can affect development of resp disease?
Different pen Mixing with other, larger groups Change of feed No mother Routine treatments
What respiratory dieases affect neonate piglets?
Actinobacillus suis
Bordetella bronchiseptica
Atrophic rhinitis
What resp diseases affect pre-weaned piglets?
Atrophic rhinitis B bronchiseptica Inclusion body rhinitis (SHV-2) Enzootic pneumonia (Mycoplasma) PRRSV Glasser's disease (H. parasuis)
What resp diseases most commonly affect weaners, growers and finishers?
Glassers A. pleuropneumonia P. multocida Enzootic pneumonia PRRSV Influenza
What are the clinical signs of enzootic pneumonia in pigs?
Coughing
Reduced growth rate/FCE
Varied growth
Secondary infection
How is enzootic pneumonia diagnosed in weaned pigs?
Clinical signs Lung lesions on PME Culture/PCR Histology Serology
How is Actinobacillus pleuropneumoniae diagnosed?
Clinical signs
Culture/PCR
Lung lesions on PME
Serology
What are the clinical/PME signs of A. pleuropneumoniae?
Acute fatal resp disease
Fibrinous pleuritis
Haemorrhagic/necrosis of dorsal surface of caudal lungs
Which bacteria are responsible for atrophic rhinitis?
B bronchiseptica
P multocida
What bacteria causes Glasser’s disease?
Haemophilus parasuis
What virus is responsible for Aujeszky’s?
SHV-1
Which porcine virus is notifiable in the UK?
Aujeszky’s/SHV1
What are the clinical signs of Aujezsky’s in piglets?
Neuro signs
Pneumonia
Death
What are the clinical signs of Aujeszky’s in adults?
Abortion, mummification
URT cough
Neuro signs rare
What are the clinical signs of SIV?
Pyrexia, anorexia Lethargy, prostate Skin erythema Severe coughing, dyspnoea Conjunctivitis Abortions possible
How is SIV diagnosed?
Clinical signs
Serology
Virus isolation
Lungs lesion on PME
Outline the pathophysiology of PRRS..
Virus replicates in and destroys macrophages and endothelial cells => vasculitis
What are the clinical signs of PRRS?
Weaned pigs and older
Tachypnoea
Thumping
Eyelid oedema, conjunctivitis
How is PRRS diagnosed?
Clinical signs
Gross pathology
Virus isolation
Serology
How is PRRS prevented?
Vaccination
Quarantine/test of new stock
Purchase uninfected semen
What does a PRCV (coronavirus) infection indicate?
Contributes to pneumonia
Biosecurity issues
What parasites can cause resp disease in pigs?
Metastrongylus
Ascaris suum
When is vaccination of resp disease administered in pigs?
Pregnant sows
Young/weaner piglets
During quarantine before entry to a herd
