- Jan 11, 2007
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Look on the package and see if it says
1) "selenite" or selenate"
OR if it mentions the word
2)"organic" or "yeast(form)" or "seleomethionine"....
The first (1)are INorganic form of selenium (not recommended) and the second (2) are ORGANIC form... a few years back I did extensive research on the two (well researching the studies which at the time had not really filtered down yet to feed and industry and were at university and pubmed) > I knew there was a big difference and concern over toxicity between the two forms as my step father had struggled for years with prostate cancer and KSU were (dietary measures) were advising selenomethionine and NOT the INorganic form in supplement...
The organic/yeast form is as far as I know is always in the geltab and usually the dry pill form will contain the INorganic form . Now dont go thinking you have poisoned your bird if it turns out to be selenite/selenate if you have adhered to the 50 MICROgram level... it is just that studies have found the organic form over the INorganic form to have better results (it is a bit too complicated to summarize here)
ETA: I just ran across this in the feed industry news :
http://www.feedindustrynetwork.com/ViewArticle.aspx?id=25220
"...Greater safety
There has long been concern that selenium can be toxic when fed in too high of doses. Roch presented a trial in broilers with a high dose of selenium yeast (5 ppm), showing a significant improvement of performance (feed conversion rates and slaughter weight), and a significant increase of the animals' blood, liver and muscle selenium content. She claimed that an equivalent dose of selenium in its mineral form would be highly toxic. The lack of toxicity of high selenium yeast dosage is another important argument in favor of selenium yeast.
Roch told the seminar participants that selenium yeast was the most bioavailable and lower toxic source of selenium to be used in poultry diets..."
1) "selenite" or selenate"
OR if it mentions the word
2)"organic" or "yeast(form)" or "seleomethionine"....
The first (1)are INorganic form of selenium (not recommended) and the second (2) are ORGANIC form... a few years back I did extensive research on the two (well researching the studies which at the time had not really filtered down yet to feed and industry and were at university and pubmed) > I knew there was a big difference and concern over toxicity between the two forms as my step father had struggled for years with prostate cancer and KSU were (dietary measures) were advising selenomethionine and NOT the INorganic form in supplement...
The organic/yeast form is as far as I know is always in the geltab and usually the dry pill form will contain the INorganic form . Now dont go thinking you have poisoned your bird if it turns out to be selenite/selenate if you have adhered to the 50 MICROgram level... it is just that studies have found the organic form over the INorganic form to have better results (it is a bit too complicated to summarize here)
ETA: I just ran across this in the feed industry news :
http://www.feedindustrynetwork.com/ViewArticle.aspx?id=25220
"...Greater safety
There has long been concern that selenium can be toxic when fed in too high of doses. Roch presented a trial in broilers with a high dose of selenium yeast (5 ppm), showing a significant improvement of performance (feed conversion rates and slaughter weight), and a significant increase of the animals' blood, liver and muscle selenium content. She claimed that an equivalent dose of selenium in its mineral form would be highly toxic. The lack of toxicity of high selenium yeast dosage is another important argument in favor of selenium yeast.
Roch told the seminar participants that selenium yeast was the most bioavailable and lower toxic source of selenium to be used in poultry diets..."
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