>But what does it do for or to the animals? Christy Sorry - my interest was only in the confusing use of the term 'organic'. What little I know is that the element itself is practically non-toxic, but compounds (at least, inorganic compounds) can be extremely toxic - maybe that's why it is organic compounds which USDA has approved? Selenium is said to occur in some soils at a concentration high enough to produce serious effects in animals grazing on some plants (eg locoweed) growing there. However, it is an essential trace element; deficiency symptoms include liver necrosis and muscular dystrophy. Its role is thought to be related to the functioning of vitamin E (necessary for growth and normal reproduction). Tony N-S. _________________________________________________________________ Join the world�s largest e-mail service with MSN Hotmail. http://www.hotmail.com
