Difference between revisions of "Category:Sheep Nematodes"
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| Line 51: | Line 51: | ||
**Ostertagiosis and Trichostrongylosis | **Ostertagiosis and Trichostrongylosis | ||
**Nematodirosis | **Nematodirosis | ||
| − | **Haemonchosis[[Category:Nematodes]][[Category:Sheep]] | + | **Haemonchosis |
| + | |||
| + | == Succession of Gastrointestinal Worm Species == | ||
| + | The relative number of worms of each species changes during the grazing season. The succession of species is due to differences in: | ||
| + | *Ability of L3 to overwinter | ||
| + | *Fecundity between worm species | ||
| + | *Rate of development from egg to L3 stage | ||
| + | *Special requirements of ''Nematodirus'' | ||
| + | |||
| + | |||
| + | [[Category:Nematodes]][[Category:Sheep]] | ||
Revision as of 22:01, 21 April 2010
Nematodes of Sheep - Gastrointestinal Nematodes
Many worm species occur in the gastrointestinal tract of sheep, though relatively few are of importance in the UK. Primary pathogens include:
| Abomasum | Small Intestine | Large Intestine | |
|---|---|---|---|
| Primary Pathogens in the UK |
|
|
|
| Worms that contribute to ovine PGE, but are rarely primary pathogens in the UK |
|
|
|
- All the above worms belong to the Trichotrongyloidea except:
- Bunostomum (a hookworm)
- Oesophagostomum
- Chabertia (Strongyloidea)
- Strongyloides (Rhabditoidea)
- Trichuris (a whipworm)
- Although many different genera and species of worms may be found in the gastro-intestinal tract of sheep there are only three distinct disease manifestations within the PGE complex:
- Ostertagiosis and Trichostrongylosis
- Nematodirosis
- Haemonchosis
Succession of Gastrointestinal Worm Species
The relative number of worms of each species changes during the grazing season. The succession of species is due to differences in:
- Ability of L3 to overwinter
- Fecundity between worm species
- Rate of development from egg to L3 stage
- Special requirements of Nematodirus
Pages in category "Sheep Nematodes"
The following 13 pages are in this category, out of 13 total.