GI disease of adult sheep Flashcards
1
Q
What should be done to check for dental disease in ewes?
A
- Palpate externally
-jaw
-lymph nodes
-face
-halitosis
-external palpation for pain - Gag + torch internally
- Radiography
2
Q
What are causes of dental disease?
A
- Ageing
- Diet
- Malocclusion
-uneven wear, feeding of root crops, mineral imbalances
3
Q
What should be done with ewes with dental disease?
A
- Cull
- Sedation / GA - rasp teeth + remove broken teeth
4
Q
What are other mouth / pharyngeal problems?
A
- Infections / abscess / discharging
- F necrophorum
- Actinobacillosis ligneresi - woodentongue
- Casesous lymphadenitis
- Actinomycosis bovis
- Overshot / undershot jaws
- Fractures
- Tumours
- Cysts
5
Q
What causes pharyngeal trauma?
A
Dosing guns
6
Q
What are clinical signs of pharyngeal trauma?
A
- Dull, depressed
- Weight loss
- Halitosis, pain, cellulitis
7
Q
What is the prognosis of pharyngeal trauma?
A
- Poor - euthanasia
8
Q
What are diseases with long incubation in sheep?
A
- Johnes
- Maedi visna
- OPA
- Border disease
9
Q
What are clinical signs of johnes?
A
- Weight loss
- Poor performance
- Anaemia
- Bottle jaw
- High parasite burden
- Death
10
Q
What is the aetiology of Johnes?
A
- Mycobacterium avium paratuberculosis
11
Q
What is the pathology of johnes?
A
– Cellular infiltration, thickening of intestines
– Malabsorption and protein losing enteropathy
– Hypoalbuminaemia
12
Q
How can you diagnose johnes?
A
- Post mortem - histopath of lymph nodes
- Serology ELISA antibody
- PCR - test faeces
- Faecal culture
- Clinical signs
13
Q
How can johnes be controlled?
A
- Vaccination - Virbac
- Lamb older + thinner ewes away from younger breeding ewes
- Do not keep offspring of infected animals
14
Q
What are other GI diseases of adult sheep?
A
- Parasitic gastro-enteritis
- Liver Fluke
- Acidosis
- Bloat
- Redgut
- Intestinal adenocarcimoma
- Peritonitis - post dystocia
15
Q
A
