| Abstract: | The toxicities of seleno-L-methionine, seleno-DL-methionine, and selenized yeast were compared. Ten pairs of mallards were fed a control diet and 15 pairs were fed diets containing 10 ppm selenium as seleno-DL-methionine, seleno-L-methionine, or selenized yeast. Hatching of fertile eggs was significantly lower for females fed 10 ppm selenium as seleno-DL-methionine (7.6%) and seleno-L-methionine (6.4%) than for controls (41.3%). Survival of ducklings was lower when their parents had been fed 10 ppm selenium as seleno-L-methionine (20.0%) than for controls (98.4%). The number of 6-day-old ducklings produced per female was significantly lower for mallards fed 10 ppm selenium as seleno-DL-methionine (0.47) or selenized yeast (2.67) than for controls (6.10), and was significantly lower for mallards fed seleno-L-methionine (0.13) than for mallards fed selenized yeast. The eighth eggs of females fed the DL or L forms of selenomethionine contained means of 9.2 and 8.9 ppm selenium, wet weight; these means were higher than the mean (6.6 ppm) for females fed selenized yeast. Among embryos that died at 7 days of age or older, the percentage of embryos that were deformed was 1.3% for controls, 24.6% for seleno-DL-methionine, 28.2% for seleno-L-methionine, and 11.0% for selenized yeast. The results suggested that seleno-DL-methionine and seleno-L-methionine were of similar toxicity and were both more toxic than selenium from selenized yeast. |
| Genre: | Article |
| ProdID: | 5220910 |
| Citation Author: | Heinz, G. H.; Hoffman, D. J. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 175 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Environmental Pollution |
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| Citation Number Of Pages: | 7 |
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| Citation Phsyical Description: | 169-175 |
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| Citation Search Results Text: | Comparison of the effects of seleno-l-methionine, seleno-dl-methionine, and selenized yeast on reproduction of mallards; 1996; Article; Journal; Environmental Pollution; Heinz, G. H.; Hoffman, D. J. |
| Citation Start Page: | 169 |
| Citation Volume: | 91 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | Comparison of the effects of seleno-l-methionine, seleno-dl-methionine, and selenized yeast on reproduction of mallards; 1996; Article; Journal; Environmental Pollution; Heinz, G. H.; Hoffman, D. J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VB5-3WBY0KT-P&_user=696292&_coverDate=12%2F31%2F1996&_rdoc=4&_fmt=summary&_orig=browse&_srch=doc-info(%23toc%235917%231996%23999089997%23543675%23FLP%23display%23Volume)&_cdi=5917&_sort=d&_docanchor=&_ct=16&_acct=C000038819&_version=1&_urlVersion=0&_userid=696292&md5=3dbe1407f33fb419e57d8ca488559bda |
| Date Other: | Wed, 16 Jun 2010 12:17 -0500 |
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