Con el objeto de determinar la actividad sanguínea de glutatión peroxidasa (GSH-Px; E.C. 1.11.1.9) en bovinos lecheros de la IX Región de la Araucanía (38º LS y 71º LO), Chile, y establecer su eventual asociación con el contenido de Se en el forraje, durante el otoño y la primavera de 1999 se tom...
The content of selenium (Se) in forage samples and the blood activity of glutathione peroxidase (GSH-Px; EC 1.11.1.9) of groups of lactating cows and heifers were evaluated between autumn and spring of 1999 in 12 dairy herds from IXth Region (38º S and 71º W) of Chile. Se-concentration was determ...
Wittwer, F.
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Araneda, P.
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Ceballos, A.
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Contreras, P.A.
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Andaur Rademacher, Marcela
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Bohmwald, H.
,
[Actividad de glutation peroxidasa (GSH-Px) en sangre de bovinos a pastoreo de la IX Región, Chile y su relación con la concentración de selenio en el forraje]
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[Glutathion peroxidase activity (GSH-Px) in grazing dairy cattle in the south of Chile (IXth Region) and their relation with selenium contents in the forage]
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Glutathion peroxidase activity (GSH-Px) in grazing dairy cattle in the south of Chile (IXth Region) and their relation with selenium contents in the forage
Pastures in the south of Chile have been shown to be selenium deficient, and as selenium is a component of deiodinase type 1, which is necessary for the synthesis of triiodothyronine (T3) at peripheral levels, the effect of selenium deficiency on the blood concentration of theses hormones in cows...
Contreras, P.A.
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Matamoros, Roberto
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Monroy, R.
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Kruze, J.
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Leyán, V.
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Andaur Rademacher, Marcela
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Bohmwald, H.
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Wittwer, F.
,
[Effect of a selenium-deficient diet on blood values of T3 and T4 in cows]
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Effect of a selenium-deficient diet on blood values of T3 and T4 in cows
In order to evaluate the effect of supplementation with two sources of selenium (Se) in blood and colostrum Se concentration in cows and their offspring, fourty three Holstein pregnant cows were used. Cows were randomly divided into three groups, and thirteen cows were supplemented one month befo...
Neumann Vásquez, Javier
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Ceballos, A.
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Chihuailaf VIvánco, Ricardo
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Bohmwald, H.
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Sepulveda, M.
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Wittwer, F.
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Quiror, E.
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[Effect of prepartum supplementation with selenized yeast or parenteral barium selenate in blood selenium concentrations in dairy cows and their offspring]
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Effect of prepartum supplementation with selenized yeast or parenteral barium selenate in blood selenium concentrations in dairy cows and their offspring