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**Ostertagiosis and Trichostrongylosis
 
**Ostertagiosis and Trichostrongylosis
 
**Nematodirosis
 
**Nematodirosis
**Haemonchosis[[Category:Nematodes]][[Category:Sheep]]
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**Haemonchosis
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== Succession of Gastrointestinal Worm Species ==
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The relative number of worms of each species changes during the grazing season. The succession of species is due to differences in:
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*Ability of L3 to overwinter
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*Fecundity between worm species
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*Rate of development from egg to L3 stage
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*Special requirements of ''Nematodirus''
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[[Category:Nematodes]][[Category:Sheep]]
Author, Donkey, Bureaucrats, Administrators
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