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Registro Completo |
Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
Data corrente: |
10/04/1996 |
Data da última atualização: |
26/09/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
VIEIRA, L. da S.; BERNE, M. E. A.; CAVALCANTE, A. C. R.; COSTA, C. A. F. |
Afiliação: |
Luiz da Silva Vieira, CNPC; Maria Elisabeth Aires Berne, CNPC; Antônio César Rocha Cavalcante, CNPC; Carlos Alberto Fagonde Costa, CNPC. |
Título: |
Haemonchus contortus resistance to ivermectin and netobimin in Brazilian sheep. |
Ano de publicação: |
1992 |
Fonte/Imprenta: |
Veterinary Parasitology, v. 45, n. 1/2, p. 111-116, 1992. |
Idioma: |
Inglês |
Conteúdo: |
Abstract - Suffolk, Texel, Hampshire Down and Ile de France sheep from the municipalities of Porto Amazonas, Piraquara and Araucaria in the State of Paraná, and Bagé in the State of Rio Grande do Sul were brought to Sobral, State of Ceará, to be used in a cross-breeding project. On arrival they had clinical signs of nematode parasitosis, and one Suffolk female died. The animals were treated orally with ivermectin (0.2 mg kg−1) and fifteen days later with netobimin (20.0 mg kg−1). Neither drug reduced the egg counts (measured in eggs per gram, EPG) significantly, and this suggested that the nematodes in the sheep were resistant to the anthelmintics used. Haemonchus contortus was the species involved. The egg counts were reduced after oral treatment with trichlorfon (100.0 mg kg−1). Haemonchus contortus larvae obtained from these animals before trichlorfon treatment and passaged through two nematode-free sheep were used in a further experiment.Twenty 6- to 9-month-old nematode-free lambs were infected with the H. contortus larvae (10 000 per animal) and, after the infection was confirmed, were randomly divided into four groups of five animals. Group I was orally treated with ivermectin at 0.2 mg kg−1, Group II with oral netobimin at 20.0 mg kg−1, Group III with oral trichlorfon at 100.0 mg kg−1 and Group IV was a non-treated control. Egg counts and faecal cultures were taken before dosing on the day of treatment and seven days later when all animals were necropsied and the nematodes were collected from the abomasa and counted. Drug efficacy measured by the reduction in adult H. contortus numbers was 99.9% for trichlorfon, 38.9% for netobimin and 17.6% for ivermectin. The results demonstrated the resistance of this strain of H. Contortus to ivermectin and netobimin. MenosAbstract - Suffolk, Texel, Hampshire Down and Ile de France sheep from the municipalities of Porto Amazonas, Piraquara and Araucaria in the State of Paraná, and Bagé in the State of Rio Grande do Sul were brought to Sobral, State of Ceará, to be used in a cross-breeding project. On arrival they had clinical signs of nematode parasitosis, and one Suffolk female died. The animals were treated orally with ivermectin (0.2 mg kg−1) and fifteen days later with netobimin (20.0 mg kg−1). Neither drug reduced the egg counts (measured in eggs per gram, EPG) significantly, and this suggested that the nematodes in the sheep were resistant to the anthelmintics used. Haemonchus contortus was the species involved. The egg counts were reduced after oral treatment with trichlorfon (100.0 mg kg−1). Haemonchus contortus larvae obtained from these animals before trichlorfon treatment and passaged through two nematode-free sheep were used in a further experiment.Twenty 6- to 9-month-old nematode-free lambs were infected with the H. contortus larvae (10 000 per animal) and, after the infection was confirmed, were randomly divided into four groups of five animals. Group I was orally treated with ivermectin at 0.2 mg kg−1, Group II with oral netobimin at 20.0 mg kg−1, Group III with oral trichlorfon at 100.0 mg kg−1 and Group IV was a non-treated control. Egg counts and faecal cultures were taken before dosing on the day of treatment and seven days later when all... Mostrar Tudo |
Palavras-Chave: |
Contagem de ovos; Faeces; Gastrintestinal nematode; Nematódeo gastrintestinal; Netobimin; Parasite Egg Count; Resistance to chemicals; Resistência a drogas; Therapeutic use. |
Thesagro: |
Anti-helmíntico; Dose; Fezes; Haemonchus contortus; Helminto gastrintestinal; Nematóide; Ovino; Parasitologia; Resistência química. |
Thesaurus Nal: |
Anthelmintics; Dosage; Drug resistance; Guanidines; Ivermectin; Nematode infections; Parasitology; Sheep; trichlorfon. |
Categoria do assunto: |
H Saúde e Patologia |
Marc: |
LEADER 03155naa a2200481 a 4500 001 1514695 005 2019-09-26 008 1992 bl uuuu u00u1 u #d 100 1 $aVIEIRA, L. da S. 245 $aHaemonchus contortus resistance to ivermectin and netobimin in Brazilian sheep.$h[electronic resource] 260 $c1992 520 $aAbstract - Suffolk, Texel, Hampshire Down and Ile de France sheep from the municipalities of Porto Amazonas, Piraquara and Araucaria in the State of Paraná, and Bagé in the State of Rio Grande do Sul were brought to Sobral, State of Ceará, to be used in a cross-breeding project. On arrival they had clinical signs of nematode parasitosis, and one Suffolk female died. The animals were treated orally with ivermectin (0.2 mg kg−1) and fifteen days later with netobimin (20.0 mg kg−1). Neither drug reduced the egg counts (measured in eggs per gram, EPG) significantly, and this suggested that the nematodes in the sheep were resistant to the anthelmintics used. Haemonchus contortus was the species involved. The egg counts were reduced after oral treatment with trichlorfon (100.0 mg kg−1). Haemonchus contortus larvae obtained from these animals before trichlorfon treatment and passaged through two nematode-free sheep were used in a further experiment.Twenty 6- to 9-month-old nematode-free lambs were infected with the H. contortus larvae (10 000 per animal) and, after the infection was confirmed, were randomly divided into four groups of five animals. Group I was orally treated with ivermectin at 0.2 mg kg−1, Group II with oral netobimin at 20.0 mg kg−1, Group III with oral trichlorfon at 100.0 mg kg−1 and Group IV was a non-treated control. Egg counts and faecal cultures were taken before dosing on the day of treatment and seven days later when all animals were necropsied and the nematodes were collected from the abomasa and counted. Drug efficacy measured by the reduction in adult H. contortus numbers was 99.9% for trichlorfon, 38.9% for netobimin and 17.6% for ivermectin. The results demonstrated the resistance of this strain of H. Contortus to ivermectin and netobimin. 650 $aAnthelmintics 650 $aDosage 650 $aDrug resistance 650 $aGuanidines 650 $aIvermectin 650 $aNematode infections 650 $aParasitology 650 $aSheep 650 $atrichlorfon 650 $aAnti-helmíntico 650 $aDose 650 $aFezes 650 $aHaemonchus contortus 650 $aHelminto gastrintestinal 650 $aNematóide 650 $aOvino 650 $aParasitologia 650 $aResistência química 653 $aContagem de ovos 653 $aFaeces 653 $aGastrintestinal nematode 653 $aNematódeo gastrintestinal 653 $aNetobimin 653 $aParasite Egg Count 653 $aResistance to chemicals 653 $aResistência a drogas 653 $aTherapeutic use 700 1 $aBERNE, M. E. A. 700 1 $aCAVALCANTE, A. C. R. 700 1 $aCOSTA, C. A. F. 773 $tVeterinary Parasitology$gv. 45, n. 1/2, p. 111-116, 1992.
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Embrapa Caprinos e Ovinos (CNPC) |
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Biblioteca(s): |
Embrapa Florestas; Embrapa Pantanal. |
Data corrente: |
05/11/2015 |
Data da última atualização: |
19/11/2015 |
Tipo da produção científica: |
Artigo em Anais de Congresso |
Autoria: |
DELAYE, L. A. M.; BERGIER, I.; SILVA, A. P. S.; CARVALHO FILHO, M. A. da S.; SAUTTER, K. D.; GUIOTOKU, M.; MAIA, C. M. B. de F. |
Afiliação: |
LUIS ANTONIO MILESI DELAYE, INTA; IVAN BERGIER TAVARES DE LIMA, CPAP; ANA PAULA SOUZA SILVA, Bolsista Embrapa Pantanal; MARCO AURÉLIO DA SILVA CARVALHO FILHO, UNIVERSIDADE POSITIVO; KLAUS DIETER SAUTTER, UNIVERSIDADE POSITIVO; MARCELA GUIOTOKU, CNPF; CLAUDIA MARIA BRANCO DE F MAIA, CNPF. |
Título: |
Miscanthus x giganteus and Aspidosperma quebracho-blanco as feedstock sources for biochar production in Argentina. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
In: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 11., 2015, São Carlos. [Anais...]. São Carlos: IQSC-USP, 2015. |
Páginas: |
p. 475-478. |
Idioma: |
Inglês |
Conteúdo: |
Argentina is considering using new biomass sources for biofuel industry. Miscanthus and quebrach o are two possible options and we evaluated both feedstock to biochar prod uction, since this material is always associated to bioenergy production. As an energy feedstock, quebracho seems to have better value (higher C content). As biochar, quebracho showed higher stability, although both materials have use potential, depending on the main soil function that is wanted to be improved. |
Palavras-Chave: |
Recursos energéticos. |
Thesagro: |
Biocombustível; Biomassa; Recurso genético. |
Thesaurus NAL: |
Biochar; Bioenergy; Biofuels; Biomass. |
Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/133415/1/SubstanciasHum.pdf
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Marc: |
LEADER 01397nam a2200289 a 4500 001 2028044 005 2015-11-19 008 2015 bl uuuu u00u1 u #d 100 1 $aDELAYE, L. A. M. 245 $aMiscanthus x giganteus and Aspidosperma quebracho-blanco as feedstock sources for biochar production in Argentina.$h[electronic resource] 260 $aIn: ENCONTRO BRASILEIRO DE SUBSTÂNCIAS HÚMICAS, 11., 2015, São Carlos. [Anais...]. São Carlos: IQSC-USP$c2015 300 $ap. 475-478. 520 $aArgentina is considering using new biomass sources for biofuel industry. Miscanthus and quebrach o are two possible options and we evaluated both feedstock to biochar prod uction, since this material is always associated to bioenergy production. As an energy feedstock, quebracho seems to have better value (higher C content). As biochar, quebracho showed higher stability, although both materials have use potential, depending on the main soil function that is wanted to be improved. 650 $aBiochar 650 $aBioenergy 650 $aBiofuels 650 $aBiomass 650 $aBiocombustível 650 $aBiomassa 650 $aRecurso genético 653 $aRecursos energéticos 700 1 $aBERGIER, I. 700 1 $aSILVA, A. P. S. 700 1 $aCARVALHO FILHO, M. A. da S. 700 1 $aSAUTTER, K. D. 700 1 $aGUIOTOKU, M. 700 1 $aMAIA, C. M. B. de F.
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