Bovinos alimentados com capim brachiaria e andropogon: hematologia e bioquímica clínica
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Data
2009-03
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Editor
José Henrique Stringhini
Resumo
Outbreaks of hepatogenous photosensitivity in cattle
in Brachiaria decumbens pastures has been associated with
Pithomyces chartaraum spores or with lithogenic saponins
in pastures. The objective of this work was to evaluate
the laboratorial aspects of the hepatic alterations of cattle
fed with Brachiaria brizantha and B. decumbens mix and
Andropogon gayanus grass, as well as their correlation with
the live weight gains. Fifty bulls were divided into two
groups of 25 animals and fed, from weaning to slaughter,
with one distinct type of grass. During 30 months and every
60 days blood samples were collected from all the animals,
and they were weighed and clinically examined. Samples
of the grasses were also collected in the same periods.
The amount of P. chartarum spores and concentration of lithogenic saponins from the pastures were determined for
a subsequent comparison with the clinical biochemistry
results. Any animal showed clinic alterations, weight gains,
however, were greater in the A. gayanus group. Hemoglobin
concentration, hematocryte levels and erythrocytes number,
total and indirect bilirubin were correlated with weight gains.
Cattle fed with Brachiaria spp. e Andropogon gayanus
showed similar hematological and hepatic function profiles.
During the experimental period, independent of the grass
type ingested, an increase of AST, GGT and bilirrubin was
observed also with an absence of clinical signals suggesting
a presence of sub-clinical chronic hepatic alteration.
Descrição
Palavras-chave
Aspartato aminotransferase, Esporidesmina, Fotossensibilização, Gama glutamiltransferase, Saponina, Aspartate aminotransferase, Gama glutamyltransferase, Photosensitivity, Saponin, Sporidesmin
Citação
MOREIRA, Cecilia Nunes; CARVALHO, Tatiane Furtado de; COSTA, Thays Nascimento; QUEIROZ, José Antonio Carvalho Colú de; LAGE, Gustavo; HARAGUSHI, Mitsue; FIORAVANTI, Maria Clorinda Soares. Bovinos alimentados com capim brachiaria e andropogon: hematologia e bioquímica clínica. Ciência Animal Brasileira, Goiânia, v. 10, n. 1, p. 195-205, jan./mar. 2009. Disponível em: <https://www.revistas.ufg.br/vet/article/view/1056/4586>.