calphormin is a vitamin and mineral supplement..www.trmirelandinc.com..
it is a high quality product.
Body Builder is great, but costly I would look at Rice Bran, oil is best, or meal...this is what helps also with fertility in both mares and stallions and healthier pregnacies in broodmares. this is also what brings on the weight and muscle mass through "body builder".. Flax seed, or flax seed meal aid in this also
http://www.honestfoods.com/topricbranoi.html
Rice Bran
On the other hand, rice bran products are invaluable as an energy dense feed, particularly applicable to the energy demands created by aerobic exercise. Because hard-working equine athletes are often unable to consume as much feed as necessary to maintain a high level of exercise, we need to find concentrated foodstuffs that supply calories without creating intestinal fill. Rice bran is one such substance that fits this criteria.
To give you a general comparison of caloric value of rice bran relative to other products, consider that 1 pound of rice bran is comparable to 1.3 pounds oats or 8 fluid ounces of corn oil. The fat in rice bran products is at least 85% digestible, but make sure the product you purchase is heat stabilized as the fat rapidly becomes rancid.
There really is no close substitute to feeding vegetable oil as a means of packing the calories and energy to your horse. Vegetable oil has been fed with success to performance horses for years by adding up to 10% of the diet as fat. In other words, a 1000 pound horse will readily consume as much as 1 cup vegetable oil twice a day added to some grain. If feeding rice bran, a horse can safely consume 1 cup (~ 1 pound) twice a day. Dietary fat is particularly effective in providing useable energy to horses involved in aerobic athletics, like distance trail horses or Event horses. It is palatable and efficiently metabolized to fuel aerobic activities.