Difference between revisions of "Dictyocaulosis - Sheep"
Jump to navigation
Jump to search
(Created page with '=== Pathogenesis === *'''''Dictyocaulus filaria''''' **Similar to ''D. viviparus'' in cattle **Lesions tend to be less widespread because worm numbers are generally low === Diagn…') |
|||
| Line 13: | Line 13: | ||
**Where these occur, remove and treat affected stock, replace with older immune sheep if necessary | **Where these occur, remove and treat affected stock, replace with older immune sheep if necessary | ||
**A commercial vaccine was available in the Middle East, though its use (were it still available) would be uneconomic in the UK | **A commercial vaccine was available in the Middle East, though its use (were it still available) would be uneconomic in the UK | ||
| + | |||
| + | ==Test yourself with the Small Ruminant Nematodes Flashcards== | ||
| + | |||
| + | [[Small_Ruminant_Nematodes_Flashcards|Small Ruminant Nematodes Flashcards]] | ||
[[Category:Sheep_Nematodes]] | [[Category:Sheep_Nematodes]] | ||
Revision as of 17:34, 20 August 2010
Pathogenesis
- Dictyocaulus filaria
- Similar to D. viviparus in cattle
- Lesions tend to be less widespread because worm numbers are generally low
Diagnosis
- Grazing history
- Clinical signs
- Faecal examination (larval identification possible by examining head, e.g. Dictyocaulus filaria (knob) or tail, e.g. Muellerius (single spine), Protostrongylus (wavy, no spine) → prognosis)
Control
- Dictyocaulus filaria:
- Difficult because outbreaks are unpredictable
- PGE control measures are normally sufficient to prevent outbreaks of disease
- Where these occur, remove and treat affected stock, replace with older immune sheep if necessary
- A commercial vaccine was available in the Middle East, though its use (were it still available) would be uneconomic in the UK