| Abstract: | High concentrations of Se have been found in aquatic food chains associated with irrigation drainwater and toxicity to fish and wildlife. Earlier studies have compared toxicities of Se as selenite and as seleno-DL-methionine (DL) in mallards. This study compares DL, seleno-L-methionine (L), selenized yeast (Y) and selenized wheat (W). Day-old mallard ducklings received an untreated diet (controls) containing 75% wheat (22% protein) or the same diet containing 15 or 30 ppm Se in the above forms. After 2 weeks blood and liver samples were collected for biochemical assays and Se analysis. All forms of selenium caused significant increases in plasma and hepatic glutathione peroxidase activities. Se as L was the most toxic, resulting in high mortality (64%) and impaired growth (>50%) and the greatest increase in ratio of oxidized to reduced glutathione with 30 ppm in the diet. Se as Y accumulated the least in liver. In a subsequent experiment with 30% dietary protein Se as L was less toxic. |
| Genre: | Article |
| ProdID: | 5224197 |
| Citation Author: | Hoffman, D.; Heinz, G.; Eisemann, J.; Pendleton, G. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | FASEB Journal |
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| Citation Phsyical Description: | A435 Abstract 2519 |
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| Citation Search Results Text: | Toxicity and oxidative stress of different forms of organic selenium (Se) and dietary protein in mallard (Anas platyrhynchos) ducklings; 1994; Article; Journal; FASEB Journal; Hoffman, D.; Heinz, G.; Eisemann, J.; Pendleton, G. |
| Citation Start Page: | A435 Abstr |
| Citation Volume: | 8 |
| Citation Year: | 1994 |
| Type: | citation/reference |
| Text: | Toxicity and oxidative stress of different forms of organic selenium (Se) and dietary protein in mallard (Anas platyrhynchos) ducklings; 1994; Article; Journal; FASEB Journal; Hoffman, D.; Heinz, G.; Eisemann, J.; Pendleton, G. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 16 Jun 2010 12:18 -0500 |
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