When laying hens are fed selenized glucose instead of sodium selenite at 0.3 mg/kg, their eggs are produced in higher numbers and have improved physical qualities, including firmer albumen, higher...
Mechanism
Synthesis from 1 study
Selenized glucose gives hens more usable selenium than sodium selenite. This selenium builds an enzyme that stops harmful molecules from damaging the egg's yolk, white, and shell. With less damage, the egg keeps its color, thickness, and structure better, and the hen lays more eggs because her body...
Most probable mechanism
When hens eat selenized glucose instead of sodium selenite, their bodies absorb more selenium, which gets used to make an enzyme that protects cells from damage caused by oxygen radicals. This protection keeps the yolk pigments from fading, strengthens the eggshell by preserving its protein framework, improves the egg white's thickness and structure, and helps the hen lay more eggs by keeping her immune system and gut healthy.
Selenized glucose is absorbed more efficiently than sodium selenite in the gastrointestinal tract, leading to higher selenium concentrations in blood and tissues
Absorbed selenium is incorporated into selenocysteine, the active component of glutathione peroxidase, increasing the enzyme's concentration and activity in plasma, yolk, albumen, and oviduct tissue
Elevated glutathione peroxidase activity reduces lipid hydroperoxides and hydrogen peroxide, lowering malondialdehyde levels and preventing oxidative degradation of yolk pigments, albumen proteins, and shell matrix proteins
Reduced oxidative stress in the oviduct preserves the integrity of calcium carbonate nucleation proteins, enabling more efficient shell mineralization and increasing shell thickness and ash content
Protection of yolk xanthophyll pigments from oxidation maintains their structural integrity and color intensity
Reduced oxidative damage in the intestinal mucosa promotes proliferation of lactic acid bacteria and suppresses pathogenic microbes, improving gut health and nutrient absorption
Enhanced antioxidant defense in immune tissues protects lymphocytes from oxidative damage during activation, increasing antibody production and systemic immune competence
Improved overall metabolic and physiological health from reduced oxidative stress increases egg production percentage by sustaining ovarian follicle development and ovulation efficiency
Evidence from Studies
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