The average horse does not really need any feed other than hay, grass, water and mineral and salt blocs. The only horses that may need horse feed are horses in intense work, pregant mares, breeding stallion, hard keepers, etc. And at that, it varies greatly. If they only need a single scoop of feed, probably less than 20 bags of a 20 lb bag of feed. However if they need 10, 15 gallons of feed, they could go through a bag of feed a week. But the average horse does not need, and is better off without, horse feed.
It depends on the size of the bags and the size of the potatoes.
hay carrots(not too many) apples(not too many) horse treats(not too many) and if you need to oats or something!
you can feed a horse hay, carrots ,apples and you need to feed the horse at less two times a day
the amount you feed your horse all depends on the size of the horse, how much excerisise it gets, if it is in stall or pasture and what you feed it. usually any where from 12lbs-22lbs a day.
It depends on the horse. If your horse is fat then you need to cut down on the horse feed, but if your horse is too skinny then you need to increase their feed until the horse gets back up to his/her weight.
you can't, you don't need to feed your horse.
For a horse living out full time you need at least 1 acre per horse. I would also suggest using a vitamin supplement and if the horse is in medium to hard work then a energy food as well! If you are unsure on what to feed I recommend calling a feed supplier helpline!
Unless you need your horse to have a lot of energy, or they have a high work load, you do not need to feed oats on a regular basis at all.
I guess you would need basic items if you have a horse. A feed bag, curry brush, etc. are good horse items for horse people.