It was probably corn. Corn is a pretty old staple for people and their animals.
A horse should be fed mainly hay, and only a little little bit of grain a day.Try a cup or less of grain a day.
Supplements should be fed with the horse's grain. How often the supplement should be mixed with a horse's food depends on the supplement, and the horse. Read the label on the supplement carefully, and talk to your vet to figure out how often you should feed the supplement to your horse, and how much.
what are the benefits of grain fed beef
Depends on the weight of the horse, the age of the horse, how hard the horse is working, the type of grain, and how well they keep their weight on just hay. The nutritional value of the hay your horse is being fed can also affect how much grain your horse needs. If you are trying to put weight on, the horse generally needs more grain. If you're trying to reduce the weight of your horse, they generally need less or none at all. If a horse is not being worked at all, they do not need grain unless they cannot keep weight on with out it.
Barley when fed in small amounts is not bad for a horse, but when fed in larger amounts it can cause a calcium/ phosphorous imbalance just like any other grain.
It depends on his height.
No. If grass-fed cattle got any grain, they wouldn't be grass-fed then. Grass-fed beef comes from cattle that are finished on grass only, with absolutely NO grain.
Corn, barley, oats, etc., same grain fed to cattle.
The most important survival adaptation is that they can survive on the grain that is fed to them by humans. Horses are not meant to eat grain, but grass or hay, and that's why some horses have problems with ulcers and colic.
Most likely they sell grain-fed (or "corn-fed") beef.
There are some feed stores that sell a low carb grain but other than that a horse just needs to eat less if it is too fat.
It can be fed grain but introduce it slowly and ensure it is getting other feed and is not low in calcium.