Respiratory disease of adult sheep Flashcards
1
Q
What are clinical signs of respiratory diseases?
A
- Weight loss
- Coughing
- Nasal discharge
- Dyspnoea
- Sudden death
2
Q
What are Common respiratory diseases?
A
- Chronic suppurative pneumonia
- Maedi Visna
- Ovine Pulmonary Adenomatosis
- Laryngeal chondritis
- Mannheimia haemolytica
3
Q
How does OPA spread?
A
- Aerosol
- Milk + colostrum
4
Q
What are clinical signs of OPA?
A
- Weight loss
- Sudden death
- Increased respiratory
- Exercise intolerance, panting
5
Q
How is OPA diagnosed?
A
- Clinical signs
- Abnormal lung sounds (crackles / wheezes)
- Ultrasound lung lesions
- Wheelbarrow test
6
Q
what are clinical signs of maedi visna?
A
- Clinical signs >2 years usually 4-5
- Progressive and fatal
- Respiratory Form
*Weight loss
*Increased respiratory effort
*Exercise intolerance - Neurological Form (Visna)
*Less common
*Weight loss
*Variable
*Abnormal gait, ataxia, inco-ordination, paralysis
*Circling, Head tremor etc - Mastitis
*Chronic mastitis
7
Q
how is maedi visna diagnosed?
Controlled?
A
- Lab tests
- Serology
- Post mortem
- Control = test + cull
8
Q
What is laryngeal chondritis also known as?
A
- Texel throat
9
Q
What are clinical signs of laryngeal chondritis?
A
- Loud inspiratory dyspnoea
- Sudden death
10
Q
How is laryngeal chondritis treated?
A
- Corticosteroids + broad spectrum long term antibiotic
- Temporary tracheostomy
11
Q
What are eye diseases in sheep?
A
- Ovine infectious keratoconjuctivitis (Pink eye)
- Silage eye / anterior uveitis
12
Q
What is the treatment of OIKC?
A
- Early cases respond better
-isolate, oxytetracycline , topical eye antibiotics
13
Q
What causes silage eye? what are the clinical signs?
A
- Caused by Listeria monocytogenes
- Blephorospasm, cloudiness cornea, swollen folded iris
14
Q
What are differential diagnoses for thin ewes?
A
- Poor nutrition - hill ewes over winter, late pregnant ewes, inadequate grazing, poor forage quality
- Teeth - oral lesions
- Chronic disease - OPA, MV, johnes, lameness
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15
Q
A
