Re: SELENIUM

[CMKSAGEHIL@aol.com]

In a message dated 98-07-21 01:26:26 EDT, nevadaghostridr@webtv.net writes:

<< .is it true that a horse that is very deficient
 in Se, usually needs a bolus shot of Se before being fed an oral
 supplement, otherwise the supplement is not absorbed??   >>

This is a gray area, but in my clinical experience, I have had people feed and
feed and feed selenium to deficient horses with very little result, but have
had much more success giving injections initially and then maintaining on oral
supplementation.  I have not seen any research about this, but my own theory
is that since selenium is a co-factor in so many enzymatic functions in cell
membranes that perhaps membranes in the digestive tract are less efficient at
lots of things (including absorbing more selenium) just like muscle cell
membranes and white blood cell membranes are.  

Heidi