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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
04/03/1998 |
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Data da última atualização: |
04/03/1998 |
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Autoria: |
BOAG, B.; THOMAS, R. J. |
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Título: |
Epidemiological studies on gastro-intestinal nematode parasites of sheep: the seasonal number of generations and succession of species. |
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Ano de publicação: |
1977 |
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Fonte/Imprenta: |
Research in Veterinary Science, v.22, n.1, p.62-67, 1977. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Monthly post mortem worm counts were carried out from June to September on grazing lambs, in association with faecal egg counts and pasture larval counts. Similar patterns were recorded by all three methods, and egg counts proved to be a reliable reflection of worm burden over this period. A succession of species was recorded, in particular Ostertagia spp and Nematodirus spp in June; Haemonchus contortus in July; Trichostrogylus virinus in August; T axei, T colubriformis and Cooperia curticei in September. A new explanation for this succession is given, based on the overwintering capabilities and freeliving development time of individual species. |
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Palavras-Chave: |
Nematodeo. |
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Thesagro: |
Epidemiologia; Ovino; Parasitologia. |
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Thesaurus Nal: |
Animal parasitic nematodes; Ewes; Feces; Gastrointestinal nematodes; Nematoda; Nematode infections; Parasitology; Seasons; Sheep diseases. |
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Categoria do assunto: |
--
H Saúde e Patologia |
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Marc: |
LEADER 01487naa a2200289 a 4500
001 1518285
005 1998-03-04
008 1977 bl uuuu u00u1 u #d
100 1 $aBOAG, B.
245 $aEpidemiological studies on gastro-intestinal nematode parasites of sheep$bthe seasonal number of generations and succession of species.
260 $c1977
520 $aAbstract: Monthly post mortem worm counts were carried out from June to September on grazing lambs, in association with faecal egg counts and pasture larval counts. Similar patterns were recorded by all three methods, and egg counts proved to be a reliable reflection of worm burden over this period. A succession of species was recorded, in particular Ostertagia spp and Nematodirus spp in June; Haemonchus contortus in July; Trichostrogylus virinus in August; T axei, T colubriformis and Cooperia curticei in September. A new explanation for this succession is given, based on the overwintering capabilities and freeliving development time of individual species.
650 $aAnimal parasitic nematodes
650 $aEwes
650 $aFeces
650 $aGastrointestinal nematodes
650 $aNematoda
650 $aNematode infections
650 $aParasitology
650 $aSeasons
650 $aSheep diseases
650 $aEpidemiologia
650 $aOvino
650 $aParasitologia
653 $aNematodeo
700 1 $aTHOMAS, R. J.
773 $tResearch in Veterinary Science$gv.22, n.1, p.62-67, 1977.
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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