BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência animal brasileira (Online) |
Texto Completo: | https://revistas.ufg.br/vet/article/view/1057 |
Resumo: | Numerous papers report hepatic alterations in ruminants fed with Brachiaria spp. The aim of this study was to verify whether the ingestion of Andropogon gayanus or Brachiaria (B. brizantha and B. decumbens) produces microscopic alterations in the liver of cattle. By histological examination was characterized the hepatic injury, and determined the amount and localization of foamy macrophages in the liver and mesenteric and scapular lymphonodes. Those changes were correlated with live weight gains of the animals. Forty bulls divided into two groups of twenty were grazing, from weaning to slaughter, in Brachiaria spp or A. gayanus pastures. In the slaughterhouse, fragments of liver and mesenteric and scapular lymphonodes were collected. Results showed, in both groups, macro and microvacuolar degeneration of hepatocytes, mainly in the periacinar region. The animals fed on Brachiaria spp pastures revealed larger quantity of foamy macrophages in the hepatic parenchyma and mesenteric lymphonodes. There was a negative correlation between the number of foamy macrophages in the liver and in mesenteric lymphonodes with the live weight gain, regardless of the type of ingested grass. In the lymph nodes, the highest macrophage concentrations were in the cortical zone, followed by the paracortical zone. The mesenteric lymphonodes showed a higher amount of foam cells than the liver. KEY WORDS: Colangiohepatitis, foamy cells, saponins, sporidesmin, tropical grasses. |
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BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODESBOVINOS ALIMENTADOS COM CAPIM BRACHIARIA E ANDROPOGON: ALTERAÇÕES HISTOLÓGICAS DO FÍGADO E LINFONODOSSanidade AnimalBovinosNumerous papers report hepatic alterations in ruminants fed with Brachiaria spp. The aim of this study was to verify whether the ingestion of Andropogon gayanus or Brachiaria (B. brizantha and B. decumbens) produces microscopic alterations in the liver of cattle. By histological examination was characterized the hepatic injury, and determined the amount and localization of foamy macrophages in the liver and mesenteric and scapular lymphonodes. Those changes were correlated with live weight gains of the animals. Forty bulls divided into two groups of twenty were grazing, from weaning to slaughter, in Brachiaria spp or A. gayanus pastures. In the slaughterhouse, fragments of liver and mesenteric and scapular lymphonodes were collected. Results showed, in both groups, macro and microvacuolar degeneration of hepatocytes, mainly in the periacinar region. The animals fed on Brachiaria spp pastures revealed larger quantity of foamy macrophages in the hepatic parenchyma and mesenteric lymphonodes. There was a negative correlation between the number of foamy macrophages in the liver and in mesenteric lymphonodes with the live weight gain, regardless of the type of ingested grass. In the lymph nodes, the highest macrophage concentrations were in the cortical zone, followed by the paracortical zone. The mesenteric lymphonodes showed a higher amount of foam cells than the liver. KEY WORDS: Colangiohepatitis, foamy cells, saponins, sporidesmin, tropical grasses.Diversos trabalhos relatam a presença de alterações hepáticas em ruminantes alimentados com Brachiaria spp, em casos espontâneos e/ou induzidos de fotossensibilização hepatógena. O objetivo deste trabalho foi verificar se o tipo de capim ingerido provoca alteração microscópica no fígado de bovinos. Foi caracterizada a lesão hepática, quantificados e localizados os macrófagos espumosos no fígado e linfonodos e as alterações correlacionadas com o peso dos animais. Avaliaram-se quarenta bovinos, distribuídos em dois grupos de vinte animais, mantidos, respectivamente, em pastagens de Brachiaria (B. brizantha e B. decumbens) e Andropogon gayanus. No frígorifico, foram colhidos de cada animal fragmentos de fígado e de linfonodos mesentérico e pré-escapular. Os animais alimentados com Brachiaria spp apresentaram maior número de macrófagos espumosos no fígado e no linfonodo mesentérico. Notou-se correlação negativa entre o número de macrófagos espumosos e o peso dos animais, nos dois grupos. A quantidade de macrófagos espumosos foi maior na zona periacinar, seguida da zona mediozonal, do ácino hepático. Nos linfonodos mesentéricos os maiores valores foram verificados na zona cortical seguida da paracortical. Os linfonodos mesentéricos apresentaram maior número de células espumosas do que o fígado. PALAVRAS-CHAVES: Colângio-hepatite, esporidesmina, gramíneas tropicais, macrófagos espumosos, saponinas. Universidade Federal de Goiás2009-04-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionAvaliado por paresPesquisaapplication/pdfhttps://revistas.ufg.br/vet/article/view/105710.5216/cab.v10i1.1057Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 10 No. 1 (2009); 206-218Ciência Animal Brasileira / Brazilian Animal Science; v. 10 n. 1 (2009); 206-2181809-68911518-2797reponame:Ciência animal brasileira (Online)instname:Universidade Federal de Goiás (UFG)instacron:UFGporhttps://revistas.ufg.br/vet/article/view/1057/4587Moreira, Cecilia NunesMorais, MicheleGarcia, Edismair CarvalhoNeto, Sebastião CabralAraújo, Eugênio Gonçalves deFioravanti, Maria Clorinda Soaresinfo:eu-repo/semantics/openAccess2009-04-03T19:01:19Zoai:ojs.revistas.ufg.br:article/1057Revistahttps://revistas.ufg.br/vetPUBhttps://revistas.ufg.br/vet/oai||revistacab@gmail.com1809-68911518-2797opendoar:2024-05-21T19:54:47.863131Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG)true |
dc.title.none.fl_str_mv |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES BOVINOS ALIMENTADOS COM CAPIM BRACHIARIA E ANDROPOGON: ALTERAÇÕES HISTOLÓGICAS DO FÍGADO E LINFONODOS |
title |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES |
spellingShingle |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES Moreira, Cecilia Nunes Sanidade Animal Bovinos |
title_short |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES |
title_full |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES |
title_fullStr |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES |
title_full_unstemmed |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES |
title_sort |
BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES |
author |
Moreira, Cecilia Nunes |
author_facet |
Moreira, Cecilia Nunes Morais, Michele Garcia, Edismair Carvalho Neto, Sebastião Cabral Araújo, Eugênio Gonçalves de Fioravanti, Maria Clorinda Soares |
author_role |
author |
author2 |
Morais, Michele Garcia, Edismair Carvalho Neto, Sebastião Cabral Araújo, Eugênio Gonçalves de Fioravanti, Maria Clorinda Soares |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Moreira, Cecilia Nunes Morais, Michele Garcia, Edismair Carvalho Neto, Sebastião Cabral Araújo, Eugênio Gonçalves de Fioravanti, Maria Clorinda Soares |
dc.subject.por.fl_str_mv |
Sanidade Animal Bovinos |
topic |
Sanidade Animal Bovinos |
description |
Numerous papers report hepatic alterations in ruminants fed with Brachiaria spp. The aim of this study was to verify whether the ingestion of Andropogon gayanus or Brachiaria (B. brizantha and B. decumbens) produces microscopic alterations in the liver of cattle. By histological examination was characterized the hepatic injury, and determined the amount and localization of foamy macrophages in the liver and mesenteric and scapular lymphonodes. Those changes were correlated with live weight gains of the animals. Forty bulls divided into two groups of twenty were grazing, from weaning to slaughter, in Brachiaria spp or A. gayanus pastures. In the slaughterhouse, fragments of liver and mesenteric and scapular lymphonodes were collected. Results showed, in both groups, macro and microvacuolar degeneration of hepatocytes, mainly in the periacinar region. The animals fed on Brachiaria spp pastures revealed larger quantity of foamy macrophages in the hepatic parenchyma and mesenteric lymphonodes. There was a negative correlation between the number of foamy macrophages in the liver and in mesenteric lymphonodes with the live weight gain, regardless of the type of ingested grass. In the lymph nodes, the highest macrophage concentrations were in the cortical zone, followed by the paracortical zone. The mesenteric lymphonodes showed a higher amount of foam cells than the liver. KEY WORDS: Colangiohepatitis, foamy cells, saponins, sporidesmin, tropical grasses. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-04-03 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Avaliado por pares Pesquisa |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://revistas.ufg.br/vet/article/view/1057 10.5216/cab.v10i1.1057 |
url |
https://revistas.ufg.br/vet/article/view/1057 |
identifier_str_mv |
10.5216/cab.v10i1.1057 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://revistas.ufg.br/vet/article/view/1057/4587 |
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 |
Universidade Federal de Goiás |
publisher.none.fl_str_mv |
Universidade Federal de Goiás |
dc.source.none.fl_str_mv |
Brazilian Animal Science/ Ciência Animal Brasileira; Vol. 10 No. 1 (2009); 206-218 Ciência Animal Brasileira / Brazilian Animal Science; v. 10 n. 1 (2009); 206-218 1809-6891 1518-2797 reponame:Ciência animal brasileira (Online) instname:Universidade Federal de Goiás (UFG) instacron:UFG |
instname_str |
Universidade Federal de Goiás (UFG) |
instacron_str |
UFG |
institution |
UFG |
reponame_str |
Ciência animal brasileira (Online) |
collection |
Ciência animal brasileira (Online) |
repository.name.fl_str_mv |
Ciência animal brasileira (Online) - Universidade Federal de Goiás (UFG) |
repository.mail.fl_str_mv |
||revistacab@gmail.com |
_version_ |
1799874782828691456 |