Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil

Detalhes bibliográficos
Autor(a) principal: Flávia da Silva,Francisca
Data de Publicação: 2018
Outros Autores: Bezerra,Hermano Manoel Francisco Figueiredo, Feitosa,Thais Ferreira, Vilela,Vinícius Longo Ribeiro
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Parasitologia Veterinária (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612018000400423
Resumo: Abstract This study aimed to evaluate the occurrence of nematode resistance to anthelmintics on sheep herds from the semi-arid region of Paraíba, Northeastern Brazil. Fecal Egg Count Reduction Test (FECRT) was carried out on 20 properties. In each herd, 30 animals were divided into five groups containing six animals each: group I, treated with albendazole 10%, 4 mg/kg; group II, ivermectin 0.08%, 0.2 mg/kg; group III, closantel 10%, 10 mg/kg; group IV, levamisole hydrochloride 5%, 5 mg/kg; and group V, monepantel 2.5%, 2.5 mg/kg. All treatments were administered orally as a single dose. Fecal samples were collected on days zero and 10 after treatment, to perform FECRT and coprocultures. Multiresistance was observed in all the properties; 95% had high resistance to albendazole, 85% to ivermectin, 80% to closantel, 40% to levamisole, and 45% to monepantel. On property 15, where monepantel was ineffective, a second FECRT for this anthelmintic was carried out 4 months after the first, resulting in 75% efficacy. Immediately after the FECRT result, two ewes were euthanized and necropsied, and Haemonchus contortus, Trichostrongylus axei, Trichostrongylus colubriformis, Oesophagostomum columbianum, and Trichuris ovis were recovered. It was concluded that the resistance of sheep gastrointestinal nematodes to antthelmintic, including monepantel, is high.
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spelling Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern BrazilAmino-acetonitrile derivativeHaemonchus contortusfarming sheepFECRTanthelmintic treatmentAbstract This study aimed to evaluate the occurrence of nematode resistance to anthelmintics on sheep herds from the semi-arid region of Paraíba, Northeastern Brazil. Fecal Egg Count Reduction Test (FECRT) was carried out on 20 properties. In each herd, 30 animals were divided into five groups containing six animals each: group I, treated with albendazole 10%, 4 mg/kg; group II, ivermectin 0.08%, 0.2 mg/kg; group III, closantel 10%, 10 mg/kg; group IV, levamisole hydrochloride 5%, 5 mg/kg; and group V, monepantel 2.5%, 2.5 mg/kg. All treatments were administered orally as a single dose. Fecal samples were collected on days zero and 10 after treatment, to perform FECRT and coprocultures. Multiresistance was observed in all the properties; 95% had high resistance to albendazole, 85% to ivermectin, 80% to closantel, 40% to levamisole, and 45% to monepantel. On property 15, where monepantel was ineffective, a second FECRT for this anthelmintic was carried out 4 months after the first, resulting in 75% efficacy. Immediately after the FECRT result, two ewes were euthanized and necropsied, and Haemonchus contortus, Trichostrongylus axei, Trichostrongylus colubriformis, Oesophagostomum columbianum, and Trichuris ovis were recovered. It was concluded that the resistance of sheep gastrointestinal nematodes to antthelmintic, including monepantel, is high.Colégio Brasileiro de Parasitologia Veterinária2018-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612018000400423Revista Brasileira de Parasitologia Veterinária v.27 n.4 2018reponame:Revista Brasileira de Parasitologia Veterinária (Online)instname:Colégio Brasileiro de Parasitologia Veterinária (CBPV)instacron:CBPV10.1590/s1984-296120180071info:eu-repo/semantics/openAccessFlávia da Silva,FranciscaBezerra,Hermano Manoel Francisco FigueiredoFeitosa,Thais FerreiraVilela,Vinícius Longo Ribeiroeng2018-11-28T00:00:00Zoai:scielo:S1984-29612018000400423Revistahttp://www.scielo.br/scielo.php?script=sci_serial&lng=pt&pid=1984-2961https://old.scielo.br/oai/scielo-oai.php||zacariascbpv@fcav.unesp.br1984-29610103-846Xopendoar:2018-11-28T00:00Revista Brasileira de Parasitologia Veterinária (Online) - Colégio Brasileiro de Parasitologia Veterinária (CBPV)false
dc.title.none.fl_str_mv Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
title Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
spellingShingle Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
Flávia da Silva,Francisca
Amino-acetonitrile derivative
Haemonchus contortus
farming sheep
FECRT
anthelmintic treatment
title_short Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
title_full Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
title_fullStr Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
title_full_unstemmed Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
title_sort Nematode resistance to five anthelmintic classes in naturally infected sheep herds in Northeastern Brazil
author Flávia da Silva,Francisca
author_facet Flávia da Silva,Francisca
Bezerra,Hermano Manoel Francisco Figueiredo
Feitosa,Thais Ferreira
Vilela,Vinícius Longo Ribeiro
author_role author
author2 Bezerra,Hermano Manoel Francisco Figueiredo
Feitosa,Thais Ferreira
Vilela,Vinícius Longo Ribeiro
author2_role author
author
author
dc.contributor.author.fl_str_mv Flávia da Silva,Francisca
Bezerra,Hermano Manoel Francisco Figueiredo
Feitosa,Thais Ferreira
Vilela,Vinícius Longo Ribeiro
dc.subject.por.fl_str_mv Amino-acetonitrile derivative
Haemonchus contortus
farming sheep
FECRT
anthelmintic treatment
topic Amino-acetonitrile derivative
Haemonchus contortus
farming sheep
FECRT
anthelmintic treatment
description Abstract This study aimed to evaluate the occurrence of nematode resistance to anthelmintics on sheep herds from the semi-arid region of Paraíba, Northeastern Brazil. Fecal Egg Count Reduction Test (FECRT) was carried out on 20 properties. In each herd, 30 animals were divided into five groups containing six animals each: group I, treated with albendazole 10%, 4 mg/kg; group II, ivermectin 0.08%, 0.2 mg/kg; group III, closantel 10%, 10 mg/kg; group IV, levamisole hydrochloride 5%, 5 mg/kg; and group V, monepantel 2.5%, 2.5 mg/kg. All treatments were administered orally as a single dose. Fecal samples were collected on days zero and 10 after treatment, to perform FECRT and coprocultures. Multiresistance was observed in all the properties; 95% had high resistance to albendazole, 85% to ivermectin, 80% to closantel, 40% to levamisole, and 45% to monepantel. On property 15, where monepantel was ineffective, a second FECRT for this anthelmintic was carried out 4 months after the first, resulting in 75% efficacy. Immediately after the FECRT result, two ewes were euthanized and necropsied, and Haemonchus contortus, Trichostrongylus axei, Trichostrongylus colubriformis, Oesophagostomum columbianum, and Trichuris ovis were recovered. It was concluded that the resistance of sheep gastrointestinal nematodes to antthelmintic, including monepantel, is high.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-29612018000400423
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dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/s1984-296120180071
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Colégio Brasileiro de Parasitologia Veterinária
publisher.none.fl_str_mv Colégio Brasileiro de Parasitologia Veterinária
dc.source.none.fl_str_mv Revista Brasileira de Parasitologia Veterinária v.27 n.4 2018
reponame:Revista Brasileira de Parasitologia Veterinária (Online)
instname:Colégio Brasileiro de Parasitologia Veterinária (CBPV)
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instname_str Colégio Brasileiro de Parasitologia Veterinária (CBPV)
instacron_str CBPV
institution CBPV
reponame_str Revista Brasileira de Parasitologia Veterinária (Online)
collection Revista Brasileira de Parasitologia Veterinária (Online)
repository.name.fl_str_mv Revista Brasileira de Parasitologia Veterinária (Online) - Colégio Brasileiro de Parasitologia Veterinária (CBPV)
repository.mail.fl_str_mv ||zacariascbpv@fcav.unesp.br
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