Oxalate poisoning of lactating cows in pasture of setaria

Detalhes bibliográficos
Autor(a) principal: Schenk, Maria Aparecida Moreira
Data de Publicação: 2014
Outros Autores: Faria Filho, Tancredo Theodoro de, Pimentel, Dorival Monteiro, Thiago, Luiz Roberto Lopes de S.
Tipo de documento: Artigo
Idioma: por
eng
Título da fonte: Pesquisa Agropecuária Brasileira (Online)
Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/16304
Resumo: A herd of 85 Nelore cows with two-months old calves and in poor conditions transferred to a pasture of Setaria anceps cv. Kazungula in the State of Mato Grosso do Sul, Brazil. After ten days, 45 of these cows showed clinical signs of oxalate poisoning characterized by staggaring, tetany, diarrhea, and nasal discharge, sometimes bloody, and nine of them died. The present study was conducted to confirm the suspected oxalate poisoning. The studies revealed that the plasma calcium concentration in animals suspected of poisoning was lower than normal. Levels of oxalates in new plant growth were very high (average 6.2%). Soils in the area contained 140 ppm of potassium, which could account for the high levels of oxalate in the grass. The most evident histopathological finding was the presence of a great number of oxalate crystals in the renal tubules, in the one cow on which post-mortem examination was done. Blood hypocalcemia and plant levels of oxalate associated with histopathological findings strongly suggest oxalate poisoning as the cause of the outbreak studied. Management practices to prevent oxalate poisoning are suggested.
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spelling Oxalate poisoning of lactating cows in pasture of setariaIntoxicação por oxalatos em vacas lactantes em pastagem de sectáriaoxalic acid; Setaria anceps cv. Kazungula; poisoning in cattle; oxalates in grassesácido oxálico; Setaria anceps cv. Kazungula; intoxicação de bovinos; oxalatos em gramíneasA herd of 85 Nelore cows with two-months old calves and in poor conditions transferred to a pasture of Setaria anceps cv. Kazungula in the State of Mato Grosso do Sul, Brazil. After ten days, 45 of these cows showed clinical signs of oxalate poisoning characterized by staggaring, tetany, diarrhea, and nasal discharge, sometimes bloody, and nine of them died. The present study was conducted to confirm the suspected oxalate poisoning. The studies revealed that the plasma calcium concentration in animals suspected of poisoning was lower than normal. Levels of oxalates in new plant growth were very high (average 6.2%). Soils in the area contained 140 ppm of potassium, which could account for the high levels of oxalate in the grass. The most evident histopathological finding was the presence of a great number of oxalate crystals in the renal tubules, in the one cow on which post-mortem examination was done. Blood hypocalcemia and plant levels of oxalate associated with histopathological findings strongly suggest oxalate poisoning as the cause of the outbreak studied. Management practices to prevent oxalate poisoning are suggested.Relata-se a ocorrência de intoxicação espontânea por oxalatos em um lote de vacas neloradas, paridas há dois meses, em mau estado nutricional, colocadas em pastagem de Setaria anceps cv. Kazungula, numa fazenda situada no Mato Grosso do Sul. Após dez dias do início do pastejo, 45 vacas de um lote de 85, apresentaram sinais de intoxicação por oxalatos, caracterizados por andar cambaleante, tetania, diarréia e corrimento nasal, este, em alguns casos, sanguinolento. Visando comprovar a suspeita clínica, foram colhidas e analisadas amostras de sangue, planta e solo. Foi feita a necropsia de um dos nove animais que morreram. Os resultados mostraram que os níveis de cálcio no plasma sanguíneo estavam abaixo dos considerados normais em todos os animais com suspeita clínica de intoxicação. Os teores de oxalatos na pastagem foram bastante altos (em média 6,2%). É possível que estes altos níveis estejam relacionados com a alta disponibilidade de potássio encontrada no solo (140 ppm em média) e com o estádio de crescimento da planta, que era uma rebrota nova. O achado mais evidente encontrado no exame histopatológico foi a presença de cristais de oxalatos em grande número de túbulos renais. Este fato, associado aos dados de hipocalcemia, confirmou a suspeita clínica de intoxicação por ingestão de oxalatos. São sugeridas algumas práticas de manejo para evitar o problema.Pesquisa Agropecuaria BrasileiraPesquisa Agropecuária BrasileiraSchenk, Maria Aparecida MoreiraFaria Filho, Tancredo Theodoro dePimentel, Dorival MonteiroThiago, Luiz Roberto Lopes de S.2014-04-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfapplication/pdfhttps://seer.sct.embrapa.br/index.php/pab/article/view/16304Pesquisa Agropecuaria Brasileira; v.17, n.9, set. 1982; 1403-1407Pesquisa Agropecuária Brasileira; v.17, n.9, set. 1982; 1403-14071678-39210100-104xreponame:Pesquisa Agropecuária Brasileira (Online)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPAporenghttps://seer.sct.embrapa.br/index.php/pab/article/view/16304/10502https://seer.sct.embrapa.br/index.php/pab/article/view/16304/10503info:eu-repo/semantics/openAccess2014-04-16T16:39:49Zoai:ojs.seer.sct.embrapa.br:article/16304Revistahttp://seer.sct.embrapa.br/index.php/pabPRIhttps://old.scielo.br/oai/scielo-oai.phppab@sct.embrapa.br || sct.pab@embrapa.br1678-39210100-204Xopendoar:2014-04-16T16:39:49Pesquisa Agropecuária Brasileira (Online) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Oxalate poisoning of lactating cows in pasture of setaria
Intoxicação por oxalatos em vacas lactantes em pastagem de sectária
title Oxalate poisoning of lactating cows in pasture of setaria
spellingShingle Oxalate poisoning of lactating cows in pasture of setaria
Schenk, Maria Aparecida Moreira
oxalic acid; Setaria anceps cv. Kazungula; poisoning in cattle; oxalates in grasses
ácido oxálico; Setaria anceps cv. Kazungula; intoxicação de bovinos; oxalatos em gramíneas
title_short Oxalate poisoning of lactating cows in pasture of setaria
title_full Oxalate poisoning of lactating cows in pasture of setaria
title_fullStr Oxalate poisoning of lactating cows in pasture of setaria
title_full_unstemmed Oxalate poisoning of lactating cows in pasture of setaria
title_sort Oxalate poisoning of lactating cows in pasture of setaria
author Schenk, Maria Aparecida Moreira
author_facet Schenk, Maria Aparecida Moreira
Faria Filho, Tancredo Theodoro de
Pimentel, Dorival Monteiro
Thiago, Luiz Roberto Lopes de S.
author_role author
author2 Faria Filho, Tancredo Theodoro de
Pimentel, Dorival Monteiro
Thiago, Luiz Roberto Lopes de S.
author2_role author
author
author
dc.contributor.none.fl_str_mv

dc.contributor.author.fl_str_mv Schenk, Maria Aparecida Moreira
Faria Filho, Tancredo Theodoro de
Pimentel, Dorival Monteiro
Thiago, Luiz Roberto Lopes de S.
dc.subject.por.fl_str_mv oxalic acid; Setaria anceps cv. Kazungula; poisoning in cattle; oxalates in grasses
ácido oxálico; Setaria anceps cv. Kazungula; intoxicação de bovinos; oxalatos em gramíneas
topic oxalic acid; Setaria anceps cv. Kazungula; poisoning in cattle; oxalates in grasses
ácido oxálico; Setaria anceps cv. Kazungula; intoxicação de bovinos; oxalatos em gramíneas
description A herd of 85 Nelore cows with two-months old calves and in poor conditions transferred to a pasture of Setaria anceps cv. Kazungula in the State of Mato Grosso do Sul, Brazil. After ten days, 45 of these cows showed clinical signs of oxalate poisoning characterized by staggaring, tetany, diarrhea, and nasal discharge, sometimes bloody, and nine of them died. The present study was conducted to confirm the suspected oxalate poisoning. The studies revealed that the plasma calcium concentration in animals suspected of poisoning was lower than normal. Levels of oxalates in new plant growth were very high (average 6.2%). Soils in the area contained 140 ppm of potassium, which could account for the high levels of oxalate in the grass. The most evident histopathological finding was the presence of a great number of oxalate crystals in the renal tubules, in the one cow on which post-mortem examination was done. Blood hypocalcemia and plant levels of oxalate associated with histopathological findings strongly suggest oxalate poisoning as the cause of the outbreak studied. Management practices to prevent oxalate poisoning are suggested.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-16
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/16304
url https://seer.sct.embrapa.br/index.php/pab/article/view/16304
dc.language.iso.fl_str_mv por
eng
language por
eng
dc.relation.none.fl_str_mv https://seer.sct.embrapa.br/index.php/pab/article/view/16304/10502
https://seer.sct.embrapa.br/index.php/pab/article/view/16304/10503
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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.17, n.9, set. 1982; 1403-1407
Pesquisa Agropecuária Brasileira; v.17, n.9, set. 1982; 1403-1407
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)
repository.mail.fl_str_mv pab@sct.embrapa.br || sct.pab@embrapa.br
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