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Goat Nematodes Overview (view source)
Revision as of 17:35, 21 January 2011
, 17:35, 21 January 2011Created page with "== Nematodes of Goats == === Species === *Goats are particularly susceptible to the ''Ostertagia, Haemonchus'' and ''Nematodirus'' species found in sheep === Epidem..."
== Nematodes of Goats ==
=== Species ===
*Goats are particularly susceptible to the ''[[Ostertagia]], [[Haemonchus]]'' and ''[[Nematodirus]]'' species found in sheep
=== Epidemiology ===
*Goats mount a weaker immune response to gastrointestinal worms, c.f. sheep, although at the same time appear more tolerant of similar sized worm burdens
*More species contribute to the periparturient rise in worm egg output (Mainly ''Ostertagia'' in sheep; ''Ostertagia'' and ''Trichostrongylus'' in goats)
*Susceptible to ''Nematodirus battus'' (often accompanied by coccidia) and ''Haemonchus''
=== Drug Susceptibility ===
*Anthelmintics are, in general, metabolised more quickly by goats therefore a higher dose is required
**Levamisole needs 1.5x sheep dose rate
**Benzimidazoles needs 1.3x sheep dose rate
*Anthelmintic resistance occurs much more quickly in goats than sheep. As many nematode species are common to both hosts, sheep should not be grazed on pastures previously used by goats
=== Approaches to Control ===
*Use sheep PGE control measures, especially pasture management. Use of silage aftermath to minimise anthelmintic usage and the risk of anthelmintic resistance developing
*Unfortunately, many goat rearers use anthelmintics excessively for example every 4-6 weeks; one treatment per grazing coupled with pasture management should be adequate
*Zero grazing recommended (minimise risk of resistance developing).
==Test yourself with the Small Ruminant Nematodes Flashcards==
[[Small_Ruminant_Nematodes_Flashcards|Small Ruminant Nematodes Flashcards]]
[[Category:To_Do_-_Parasites]]
[[Category:Goat Nematodes]]
=== Species ===
*Goats are particularly susceptible to the ''[[Ostertagia]], [[Haemonchus]]'' and ''[[Nematodirus]]'' species found in sheep
=== Epidemiology ===
*Goats mount a weaker immune response to gastrointestinal worms, c.f. sheep, although at the same time appear more tolerant of similar sized worm burdens
*More species contribute to the periparturient rise in worm egg output (Mainly ''Ostertagia'' in sheep; ''Ostertagia'' and ''Trichostrongylus'' in goats)
*Susceptible to ''Nematodirus battus'' (often accompanied by coccidia) and ''Haemonchus''
=== Drug Susceptibility ===
*Anthelmintics are, in general, metabolised more quickly by goats therefore a higher dose is required
**Levamisole needs 1.5x sheep dose rate
**Benzimidazoles needs 1.3x sheep dose rate
*Anthelmintic resistance occurs much more quickly in goats than sheep. As many nematode species are common to both hosts, sheep should not be grazed on pastures previously used by goats
=== Approaches to Control ===
*Use sheep PGE control measures, especially pasture management. Use of silage aftermath to minimise anthelmintic usage and the risk of anthelmintic resistance developing
*Unfortunately, many goat rearers use anthelmintics excessively for example every 4-6 weeks; one treatment per grazing coupled with pasture management should be adequate
*Zero grazing recommended (minimise risk of resistance developing).
==Test yourself with the Small Ruminant Nematodes Flashcards==
[[Small_Ruminant_Nematodes_Flashcards|Small Ruminant Nematodes Flashcards]]
[[Category:To_Do_-_Parasites]]
[[Category:Goat Nematodes]]