BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES
DOI:
https://doi.org/10.5216/cab.v10i1.1057Keywords:
Sanidade Animal, BovinosAbstract
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.
Downloads
Download data is not yet available.
Downloads
Published
2009-04-03
How to Cite
MOREIRA, C. N.; MORAIS, M.; GARCIA, E. C.; NETO, S. C.; ARAÚJO, E. G. de; FIORAVANTI, M. C. S. BOVINE CATTLE FED WITH ANDROPOGON AND BRACHIARIA GRASS: HISTOLOGICAL ALTERATIONS OF LIVER AND LYMPH NODES. Brazilian Animal Science/ Ciência Animal Brasileira, Goiânia, v. 10, n. 1, p. 206–218, 2009. DOI: 10.5216/cab.v10i1.1057. Disponível em: https://revistas.ufg.br/vet/article/view/1057. Acesso em: 24 nov. 2024.
Issue
Section
Veterinary Medicine
License
Authors who publish with this journal agree to the following terms:
- Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g. in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
