Difference between revisions of "Dictyocaulosis - Sheep"
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(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…') |
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| − | + | === 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 | ||
| − | [[Category: | + | [[Category:Sheep_Nematodes]] |
| − | |||
| − | |||
Revision as of 22:30, 21 April 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