Marcadores fisiológicos do estresse e perfil metabólico de bovinos das raças Curraleiro Pé-Duro, Pantaneiro e Nelore em confinamento experimental
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2013-07-05
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Universidade Federal de Goiás
Resumo
This study aimed at evaluating the productive performance and physiological
markers of stress of bovines from different breeds. We evaluated 45 bovines,
Curraleiro Pe-Duro (Gcur), Pantaneiro (Gpan) and Nellore (Gnel), finished in feedlot.
We analyzed cortisol and acute phase proteins levels, hemogram, protein and
energetic profiles and enzymatic evaluation at three moments, M0, M56 and M103,
we also carried out the histopathological examination of liver and lymph nodes
fragments. Cortisol values in Gnel were higher at M0 than at M103. In all groups, the
values of globular volume, hemoglobin, albumin and α-1-acid glycoprotein were
higher at M0 than at M103, the same occurred to transferrin in Gpan and Gnel. IgG
showed higher concentrations at M0 in all three groups. Fibrinogen in Gpan and
Gnel was lower at M103 than in M0. Weight gain was satisfactory in all groups. The
ALP and GGT serum values were lower at M0 and AST was lower at M103. The
protein and the energetic profile (cholesterol) increased throughout the
experiment. Histopathological analysis of liver and mesenteric lymph nodes
showed cholangiohepatitis. Feedlot system for Curraleiro Pé-Duro, Pantaneiro and
Nellore bovines causes discrete alterations in eritrogram and acute phase protein
(α-1-acid glycoprotein). Metabolic and enzymatic profiles as well as hepatic and
lymph nodes histopathological evaluation showed presence of cholangiohepatitis;
however such alterations did not affect productive performance.
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Benatti, Liliane Aparecida Tanus. Marcadores fisiológicos do estresse e perfil metabólico de bovinos das raças Curraleiro Pé-Duro, Pantaneiro e Nelore em confinamento experimental. 2013. 126 f. Tese (Doutorado em Ciência Animal), Universidade Federal de Goiás, Goiânia, 2013.