Difference between revisions of "Category:Sheep Nematodes"
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|'''Primary Pathogens in the UK''' | |'''Primary Pathogens in the UK''' | ||
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| − | *''Ostertagia (Teladorsagia) circumcincta'' | + | *''[[Ostertagia|Ostertagia (Teladorsagia) circumcincta]]'' |
*''Haemonchus contortus'' | *''Haemonchus contortus'' | ||
Revision as of 17:38, 8 August 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.