Effects of dietary levels of selenium-enriched yeast and sodium selenite as selenium sources fed to growing-finishing pigs on performance, tissue selenium, serum glutathione peroxidase activity, carcass characteristics, and loin quality.

1999 ◽  
Vol 77 (8) ◽  
pp. 2172 ◽  
Author(s):  
D C Mahan ◽  
T R Cline ◽  
B Richert
Keyword(s):  
Glutathione Peroxidase ◽  
Peroxidase Activity ◽  
Sodium Selenite ◽  
Carcass Characteristics ◽  
Finishing Pigs ◽  
Glutathione Peroxidase Activity ◽  
Tissue Selenium

Effects of selenium source and level in diet on glutathione peroxidase activity, tissue selenium distribution, and growth performance in poultry

2018 ◽  
Vol 19 (2) ◽  
pp. 166-176 ◽  
Author(s):  
Radmila Marković ◽  
Jelena Ćirić ◽  
Marija Starčević ◽  
Dragan Šefer ◽  
Milan Ž. Baltić
Keyword(s):  
Glutathione Peroxidase ◽  
Growth Performance ◽  
Peroxidase Activity ◽  
The Body ◽  
Human Beings ◽  
Glutathione Peroxidase Activity ◽  
Positive Effects ◽  
Feed Supplements ◽  
Tissue Selenium ◽  
Published Research

AbstractToday, a few differing sources of selenium (Se), i.e. inorganic, organic, and nano forms of Se, are used as feed supplements for poultry. Published research indicates that nano-Se and organic Se possess comparable efficiency to inorganic Se in increasing GSH-Px activity of plasma and various tissues, but they deposit at higher rates in various tissues. However, there are principal differences in absorption mechanisms, metabolism, and efficiency of these three forms of Se. The aim of this review was to analyze the available literature on the effects of different Se sources and levels in the diet on glutathione peroxidase (GSH-Px) activity, tissue Se distribution and growth performance in poultry. Higher levels of Se increase GSH-Px activity in the body, but this reaches a plateau even if Se concentrations in diet increase further, while the deposition of Se in tissues increases as Se content in diet increases. In addition, many studies have shown the positive effects of adding Se to diet on growth performance in poultry. Optimal Se supplementation is necessary not only for good poultry health but also to ensure and preserve meat quality during storage and to provide human beings with this microelement.

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