Open AccessJournal Article
Distribution of glutathione peroxidase activity and selenium in the blood of dairy cows.
Scholz Rw,Hutchinson Lj +1 more
Reads0
Chats0
TLDR
The distribution of GSH-Px activity and selenium concentrations among several components in the blood of dairy cows was examined in this paper, and a positive linear relationship (r = 0.958) was found in dairy cattle under practical field conditions.Abstract:
The distribution of glutathione peroxidase (GSH-Px) activity and selenium concentrations among several components in the blood of dairy cows was examined. Approximately 98% of the GSH-Px activity in peripheral blood was associated with the erythrocytes when enzyme activity was expressed as units per milliliter of blood. The GSH-Px activity expressed per cell was approximately fourfold greater for peripheral leukocytes than for erythrocytes. The cellular component contained a greater proportion (approx 73%) of whole blood selenium than did the plasma. A positive linear relationship (r = 0.958) between blood GSH-Px activity and blood selenium concentrations was found in dairy cattle under practical field conditions.read more
Citations
More filters
Journal ArticleDOI
Assessment of trace mineral status of ruminants: A review
TL;DR: The trace mineral status of animals is best described by concentrations in liver as mentioned in this paper, and the correlation coefficients between concentrations of trace minerals in blood and liver are highest in deficient animals because endogenous reserves are depleted.
Journal ArticleDOI
Role of vitamin E and selenium in host defense against mastitis.
TL;DR: Subcutaneous injections of vitamin E approximately 10 and 5 d prior to calving successfully elevated neutrophil alpha-tocopherol concentrations during the periparturient period and negated the suppressed intracellular kill of bacteria by neutrophils that is commonly observed at calving.
Journal Article
The Two Faces of Selenium-Deficiency and Toxicity--Are Similar in Animals and Man
L D Koller,J H Exon +1 more
TL;DR: The purpose of this review article is to demonstrate the close parallelism of daily requirements, biological activity and minimum and maximum tolerable levels of selenium for animals and man.
Journal ArticleDOI
Effects of copper status on neutrophil function, superoxide dismutase, and copper distribution in steers.
TL;DR: In this study, Cu status affected its distribution in the tissues and related enzyme activities as well as bactericidal function of neutrophils in Holstein steers in a completely randomized block design.
Journal ArticleDOI
A Summary of New Findings on the Biological Effects of Selenium in Selected Animal Species-A Critical Review.
Bozena Hosnedlova,Marta Kepinska,Sylvie Skalickova,Carlos Fernandez,Branislav Ruttkay-Nedecky,T.D. Malevu,Jiri Sochor,Mojmir Baron,Magdalena Melčová,Jarmila Zídková,René Kizek,René Kizek +11 more
TL;DR: The review summarizes the survey of knowledge on selenium, its biological significance in the organism, the impact of its deficiency in mammalian livestock (comparison of ruminants vs. non-ruminants, herbivore vs. omnivore) and possibilities of its peroral administration.