Cattle poisoning by the mushroom Ramaria flavo-brunnescens
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Pesquisa Agropecuária Brasileira (Online) |
Texto Completo: | https://seer.sct.embrapa.br/index.php/pab/article/view/17187 |
Resumo: | A study of two incidents of the disease known in Rio Grande do Sul, Brazil, as “mal do eucalipto”, and a study with ten bovines dosed with the murshroom Ramaria flavo-brunnescens are reported. The administration of a minimum dose of 5 g of mushroom per kg of animal body weight is sufficient to produce symptoms of the disease. A minimum dose of 20 g/kg daily for 18 days produces death, and excessively high doses (36 g/kg) may cause death with a single administration. The symptoms observed in the experimental animals included sialorrhea, loss of body weight, loss of hair at the tip of the tail, and atrophy of the tongue papillae. Ulcerations of the tongue and esophagus were the most predominant lesions observed in autopsied animals. Microscopic examination showed these to be degenerative lesions, necrosis and inflammatory infiltration of the mucous membrane, hemorrhages and slight inflammatory reaction in the central nervous system. Loosening of hooves and horns, hemorrhages in the anterior chamber of the eye, and blindness were additional symptoms observed in animals which had contracted the disease naturally. By comparing results of the experiments with the symptoms of those animals found to be suffering from the disease naturally, it can be concluded that the so-called "mal do eucalipto" is produced by ingestion of R. flavo-brunnescens. |
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Cattle poisoning by the mushroom Ramaria flavo-brunnescensIntoxicação em bovinos pelo cogumelo Ramaria flavo-brunnescensPoisonous plants; mal do eucaliptoPlantas tóxicas; mal do eucaliptoA study of two incidents of the disease known in Rio Grande do Sul, Brazil, as “mal do eucalipto”, and a study with ten bovines dosed with the murshroom Ramaria flavo-brunnescens are reported. The administration of a minimum dose of 5 g of mushroom per kg of animal body weight is sufficient to produce symptoms of the disease. A minimum dose of 20 g/kg daily for 18 days produces death, and excessively high doses (36 g/kg) may cause death with a single administration. The symptoms observed in the experimental animals included sialorrhea, loss of body weight, loss of hair at the tip of the tail, and atrophy of the tongue papillae. Ulcerations of the tongue and esophagus were the most predominant lesions observed in autopsied animals. Microscopic examination showed these to be degenerative lesions, necrosis and inflammatory infiltration of the mucous membrane, hemorrhages and slight inflammatory reaction in the central nervous system. Loosening of hooves and horns, hemorrhages in the anterior chamber of the eye, and blindness were additional symptoms observed in animals which had contracted the disease naturally. By comparing results of the experiments with the symptoms of those animals found to be suffering from the disease naturally, it can be concluded that the so-called "mal do eucalipto" is produced by ingestion of R. flavo-brunnescens.São relatados um estudo de dois casos naturais da doença conhecida no Rio Grande do Sul como "mal do eucalipto" e um estudo experimental com o cogumelo Ramaria flavo-brunnescens em 10 bovinos. Dos experimentos concluiu-se que são necessárias as doses mínimas diárias de aproximadamente 5 g do cogumelo por kg de peso do animal durante 5 dias, para produzir sintomas da doença, e de 20 g/kg durante 18 dias, para provocar a morte, e, que uma única administração de dose excessivamente alta (36 g/kg) pode levar à morte. Os sintomas observados nos casos experimentais foram sialorréia, emagrecimento, queda dos pêlos da extremidade da cauda e atrofia das papilas linguais. As lesões macroscópicas mais importantes, nos animais necropsiados, foram ulcerações na língua e no esôfago. Microscopicamente foram vistas lesões degenerativas, necrose e infiltrado inflamatório nas mucosas, hemorragias e discreta reação inflamatória no sistema nervoso central. Nos casos naturais da doença foram observados, ainda, o afrouxamento dos cascos e chifres, hemorragias na câmara anterior do olho e cegueira. Pela comparação dos experimentos com os casos espontâneos, concluiu-se que o chamado "mal do eucalipto" é produzido pela ingestão do cogumelo R. flavo-brunnescens.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSantos, Murilo Nogueira dosBarros, Severo Sales deBarros, Claudio Severo Lombardo de2014-04-15info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/17187Pesquisa Agropecuaria Brasileira; v.10, n.8, 1975: Série Veterinária; 105-109Pesquisa Agropecuária Brasileira; v.10, n.8, 1975: Série Veterinária; 105-1091678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporhttps://seer.sct.embrapa.br/index.php/pab/article/view/17187/11514info:eu-repo/semantics/openAccess2014-04-15T19:02:14Zoai:ojs.seer.sct.embrapa.br:article/17187Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-15T19:02:14Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false |
dc.title.none.fl_str_mv |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens Intoxicação em bovinos pelo cogumelo Ramaria flavo-brunnescens |
title |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens |
spellingShingle |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens Santos, Murilo Nogueira dos Poisonous plants; mal do eucalipto Plantas tóxicas; mal do eucalipto |
title_short |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens |
title_full |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens |
title_fullStr |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens |
title_full_unstemmed |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens |
title_sort |
Cattle poisoning by the mushroom Ramaria flavo-brunnescens |
author |
Santos, Murilo Nogueira dos |
author_facet |
Santos, Murilo Nogueira dos Barros, Severo Sales de Barros, Claudio Severo Lombardo de |
author_role |
author |
author2 |
Barros, Severo Sales de Barros, Claudio Severo Lombardo de |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
|
dc.contributor.author.fl_str_mv |
Santos, Murilo Nogueira dos Barros, Severo Sales de Barros, Claudio Severo Lombardo de |
dc.subject.por.fl_str_mv |
Poisonous plants; mal do eucalipto Plantas tóxicas; mal do eucalipto |
topic |
Poisonous plants; mal do eucalipto Plantas tóxicas; mal do eucalipto |
description |
A study of two incidents of the disease known in Rio Grande do Sul, Brazil, as “mal do eucalipto”, and a study with ten bovines dosed with the murshroom Ramaria flavo-brunnescens are reported. The administration of a minimum dose of 5 g of mushroom per kg of animal body weight is sufficient to produce symptoms of the disease. A minimum dose of 20 g/kg daily for 18 days produces death, and excessively high doses (36 g/kg) may cause death with a single administration. The symptoms observed in the experimental animals included sialorrhea, loss of body weight, loss of hair at the tip of the tail, and atrophy of the tongue papillae. Ulcerations of the tongue and esophagus were the most predominant lesions observed in autopsied animals. Microscopic examination showed these to be degenerative lesions, necrosis and inflammatory infiltration of the mucous membrane, hemorrhages and slight inflammatory reaction in the central nervous system. Loosening of hooves and horns, hemorrhages in the anterior chamber of the eye, and blindness were additional symptoms observed in animals which had contracted the disease naturally. By comparing results of the experiments with the symptoms of those animals found to be suffering from the disease naturally, it can be concluded that the so-called "mal do eucalipto" is produced by ingestion of R. flavo-brunnescens. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-04-15 |
dc.type.none.fl_str_mv |
|
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17187 |
url |
https://seer.sct.embrapa.br/index.php/pab/article/view/17187 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://seer.sct.embrapa.br/index.php/pab/article/view/17187/11514 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
publisher.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira Pesquisa Agropecuária Brasileira |
dc.source.none.fl_str_mv |
Pesquisa Agropecuaria Brasileira; v.10, n.8, 1975: Série Veterinária; 105-109 Pesquisa Agropecuária Brasileira; v.10, n.8, 1975: Série Veterinária; 105-109 1678-3921 0100-104x reponame:Pesquisa Agropecuária Brasileira (Online) instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa) instacron:EMBRAPA |
instname_str |
Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
instacron_str |
EMBRAPA |
institution |
EMBRAPA |
reponame_str |
Pesquisa Agropecuária Brasileira (Online) |
collection |
Pesquisa Agropecuária Brasileira (Online) |
repository.name.fl_str_mv |
Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
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pab@sct.embrapa.br || sct.pab@embrapa.br |
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