LECTURE 22: Musculoskeletal Diseases I Flashcards
What is reovirus? (viral arthritis)
non enveloped RNA virus
Reovirus is common in _____.
Chickens
How is reovirus transmitted?
Horizontal and vertical
What are clinical signs of reovirus?
Lameness/resistance to movement
Inflammation and swelling of hock joint
Green discoloration of muscle hemorrhage
Stunting and poor uniformity
Whats a dead giveaway for reovirus?
“Hock walking”
What are gross lesions of reovirus?
Top hocks back end DDFT
Marked edema of hock joint
Fibrinous exudate in hock joints
Erosion of articular cartilage
Aortic rupture
What is the sampling and testing for reovirus?
- histopathology
- Viral isolation
- PCR
- Blood samples
Why do you have to be careful with PCR with reovirus?
Can be associated with PEMS and RSS
For MS what samples can you take for testing?
- PCR
- Histopathology
- Serology
What is vertebral osteomyelitis? (kinky back)
Gram positive bacterial bone marrow infection
What causes vertebral osteomyelitis?
Enterococcus cecorum
What are clinical signs of vertebral osteomyelitis?
Abnormal gait
Reluctance to move
Kinky back flock
What are the gross lesions for vertebral osteomyelitis?
Spondylitis and osteomyelitis
Swelling of vertebrae
Vertebral abscess
How do you sample for vertebral osteomyelitis?
- Histopathology
- Bacterial swabs
- Feed and water testing
How do you prevent vertebral osteomyelitis?
cull affected birds
Sanitize waterlines
Focus on good gut health (cocci)
