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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/04/1999 |
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Data da última atualização: |
09/08/2023 |
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Autoria: |
GITHIGIA, S. M.; THAMSBORG, S. M.; LARSEN, M.; KYVSGAARD, N. C.; NANSEN, P. |
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Título: |
The preventive effect of the fungus duddingtonia flagrans on trichostrongyle infections of lambs on pasture. |
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Ano de publicação: |
1997 |
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Fonte/Imprenta: |
International Journal for Parasitology, v. 27, n. 8, p. 931-939, Aug. 1997. |
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DOI: |
10.1016/s0020-7519(97)00065-9 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Four groups of 8 parasite-naive Dorset-crossbred lambs, 3-4 months old, were turned out on infected pasture on 2 May and allocated to 4 separate paddocks. From May to September, 2 groups received Duddingtonia flagrans (10(6) chlamydospores per kg body weight per lamb per day) mixed in 100 g of barley, while the other 2 groups received barley only. All groups remained set-stocked until slaughter for worm counts on 10 October. In late June, all lambs were treated with fenbendazole due to severe parasitic gastroenteritis in all groups. The faecal egg counts were comparable for the 2 treatments throughout the grazing period. Larval development of Ostertagia/Trichostrongylus spp. in faecal cultures was 1-28% in the fungi-fed groups compared with 60-80% in the untreated groups (P < 0.05). In September, pasture larval counts of Ostertagia/Trichostrongylus were 930 and 4400 L3 kg-1 on paddocks of fungi-fed and untreated groups, respectively. Corresponding figures for Nematodirus spp. were 7200 and 11600 L3 kg-1, respectively. At slaughter, the number of immature Ostertagia spp. was 62% lower in the fungi-fed groups compared with the untreated groups (P < 0.05). Four parasite-free lambs were introduced to each paddock during the period 3-23 October and slaughtered for worm counts after 3 weeks of housing. The total worm burden of tracers on paddocks previously grazed by fungi-fed lambs was reduced 86% (P < 0.05; geometric means) compared with control groups, while significant reductions were also seen in abomasal worm counts (68%; P < 0.05), N. spathiger (98%; P < 0.05) and for N. battus (97%; P < 0.01). It is concluded that dosing sheep with D. flagrans while grazing may limit the build up of pasture contamination in the late grazing season and subsequently limit the intake of larvae in sheep. MenosAbstract: Four groups of 8 parasite-naive Dorset-crossbred lambs, 3-4 months old, were turned out on infected pasture on 2 May and allocated to 4 separate paddocks. From May to September, 2 groups received Duddingtonia flagrans (10(6) chlamydospores per kg body weight per lamb per day) mixed in 100 g of barley, while the other 2 groups received barley only. All groups remained set-stocked until slaughter for worm counts on 10 October. In late June, all lambs were treated with fenbendazole due to severe parasitic gastroenteritis in all groups. The faecal egg counts were comparable for the 2 treatments throughout the grazing period. Larval development of Ostertagia/Trichostrongylus spp. in faecal cultures was 1-28% in the fungi-fed groups compared with 60-80% in the untreated groups (P < 0.05). In September, pasture larval counts of Ostertagia/Trichostrongylus were 930 and 4400 L3 kg-1 on paddocks of fungi-fed and untreated groups, respectively. Corresponding figures for Nematodirus spp. were 7200 and 11600 L3 kg-1, respectively. At slaughter, the number of immature Ostertagia spp. was 62% lower in the fungi-fed groups compared with the untreated groups (P < 0.05). Four parasite-free lambs were introduced to each paddock during the period 3-23 October and slaughtered for worm counts after 3 weeks of housing. The total worm burden of tracers on paddocks previously grazed by fungi-fed lambs was reduced 86% (P < 0.05; geometric means) compared with control groups, while significa... Mostrar Tudo |
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Palavras-Chave: |
Controle geologico; Mitosporic Fungi; Namatophagous fungi; Nematodeo; Ostertagiasis; Parasite Egg Count; Prevention control; Therapeutic use. |
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Thesagro: |
Fungo; Ovino. |
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Thesaurus Nal: |
Anthelmintics; Disease control; Feces; Fenbendazole; Grazing; Nematode control; Parasitology; Pest control; Sheep diseases. |
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Categoria do assunto: |
-- |
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Marc: |
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Registro original: |
Embrapa Caprinos e Ovinos (CNPC) |
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| Registros recuperados : 2 | |
| 1. |  | PARFITT, J. M. B.; REIS, C. E. S.; RECKZIEGEL, N. L.; AQUINO, L. S.; TIMM, L. C.; CASTILHOS, D. D.; NEBEL, A. L. C. Variabilidade espacial do carbono da biomassa microbiana num planossolo cultivado com arroz irrigado. In: CONGRESSO BRASILEIRO DE ARROZ IRRIGADO, 5.; REUNIÃO DA CULTURA DO ARROZ IRRIGADO, 27., 2007, Pelotas. Anais... Pelotas: Embrapa Clima Temperado, 2007. v. 1, p. 614-616| Tipo: Artigo em Anais de Congresso / Nota Técnica | Circulação/Nível: -- - -- |
| Biblioteca(s): Embrapa Clima Temperado. |
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| 2. | | PARFITT, J. M. B.; GONÇALVES, F. C.; RECKZIEGEL, N. L.; AQUINO, L. S.; TIMM, L. C.; CASTILHOS, D. D.; NEBEL, A. L. C. Variabilidade espacial do carbono orgânico num planossolo cultivado com arroz irrigado. In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 31., 2007, Gramado. Conquistas & desafios da ciência do solo brasileira: anais... Porto Alegre: UFRGS: SBCS, 2007. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso / Nota Técnica |
| Biblioteca(s): Embrapa Clima Temperado. |
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| Registros recuperados : 2 | |
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