Originally Posted by gothicangel69
Any horse on a complete feed, should have a mineral vitamin supplement with 0.05 to 0.1 selenium in it.
Just wanted to throw out there that the more concentrated the feed (i.e. The smaller the ration recommended on the bag) the higher the level of selenium needs to be to meet nutritional value. For example, I feed 1-1/4 lb of a ration balancer daily and it has 3.40 ppm. Looks high, but because I feed so little of it, my horse is not getting overdosed. Safe Choice is an example of a grain that's fed at a higher feeding rate, and it contains 0.6 ppm selenium. I'd probably be feeding 5 lbs of that a day if I were following the feeding directions on the bag, so the amount of selenium would be comparable to the amount from 1 lb of the ration balancer.
(BTW, I think you got your decimal points in the wrong spot