Swine Infectious Diseases

Question 1

• Herpes virus
• Young neonates: CNS sings, anorexia, tremors,in coordination, blindness, paddling.
• Morbidity, mortality: 100%.
• Weaned pigs: Respiratory: coughing, dyspnea. Mortality much lower.
• Grower and Finisher: Coughing, sneezing, nasal discharge.
• Older: respiratory signs, reproductive failure. No CNS signs.
• No treatment. Older can recover. Vaccines available.

Answer 1

Pseudorabies

Aujesky’s disease

Question 2

• Control: Vaccination
• Control also air quality, ambient temperature, and ventilation
• No cell walls and penicillin is not effective
• Feeder pigs, and sows. Fevers, inapetente
• Post mortem: purple to gray areas of consolidation in the cranio-ventral lungs, with catarrhal exudate in the airways and enlarged regional lymph nodes.
• Attach to and disrupt the pulmonary mucociliary apparatus preventing from functioning properly = lungs more susceptible to other bacterial infection
• Coughing in the feeder pigs and few sows.
• Fevers, inappetence,most remain normal in appearance.
• Weight gains slowed.
• Post-mortem: Purple to gray areas of consolidation in cranio-ventral lungs. Catarrhal exudate in the airways and n larger regional lymph nodes

Answer 2

Mycoplasma hyopeumoniae