I can add a little information on feeding Rice Bran to horses. Maybe a little more than most since I invented the use of Stabilized Rice Bran for equine feeds. First, raw rice bran is rancid when you get it. Period! Once exposed to air in the milling process rice bran goes rancid in about eight hours. As you can see, there is no way to get it to a horse in this time period. However, rancidity is not the real potential problem with unstabilized or raw rice bran. Since it is a waste product, it is stored and handled as such with no regard to outside contamination. Rats, birds, mold and moisture all have access to raw bran because of the way it is stored in most rice mills. On the other hand, stabilized rice bran is actually a food grade product and is handled and stored that way. You can't move raw rice bran to another location from the rice mill to stabilize it. It would already be denatured by the time it was moved. Stabilization equipment has to actually be in the rice mill, and the bran is stabilized within minutes of being milled off of the rice kernel. The process is mechanical and destroys the enzyme that causes the fat in the rice bran to go rancid without effecting fragile anti-oxidants. This is actually a kind of flash heat process that is very specific. After forced cooling, it then goes directly to packaging in bulk tote bags or smaller retail bags. If calcium is to be added, this is done during the cooling period in the system. Again, all done in a controlled environment. Can you feed raw bran and get away with it?? Yes, until you can't. You may do it for years, but it is a roll of the dice. I would certainly never feed it to a customers horse. When we brought the first rice bran label to the market in the 1980's, "Natural Glo", we realized that we could only sell stabilized rice bran from a liability standpoint. As to amount, over about 2 pounds per day seems to reach the law of diminishing return. Up to that point there is a lot other than just fat to stabilized rice bran. This is something that many horse owners don't realize, and the reason that there is such a response from the horse to stabilized rice bran in the diet. The protein is about 12% and of very high quality. There is over 100 anti-oxidant vitamins. It is one of the highest natural sources of vitamin E found in nature, high in fiber and typically replaces enough conventional feed to significantly lower NSC in the total diet. We use stabilized rice bran in Renew Gold for these reasons. Cool energy and super safe if stabilized.