Deficiency and Protective Effects

Clinical selenium deficiency in mminants is expressed as white muscle disease, lethargy, impaired reproduction, weight loss and reduced growth, shedding, decreased immune response, decreased erythrocyte glutathione peroxidase, and sudden death. Selenium deficiency - as judged by blood concentrations 0.1 mg Se/L - has been documented in California among domestic cattle, mule 

Reasons to account for the antagonism of selenium and heavy metals (here mercury is 

Lethality of various selenium compounds to selected species of aquatic organisms, birds. 

Medium, Taxonomic Group, Exposure Interval in Hours LC50 (p.g/L) 

Fishes Green River, Utah 3 endangered species (Colorado squawfish, Ptychocheilus Indus razorback sucker, Xyrauchen texanus bonytail, Gila elegans) fry and juveniles Selenite 96 h 18,000.0 (14,000.0- 

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