It depends on the height, so to get a beter answer, i suggest you ask another question asking what a horse that is ____ hh should weigh
It would just be his ideal weight. A horse that keeps a good body weight with little food is called an 'easy keeper'.
"Easy Keeper"
Yes the amount of exercise will affect a horses weight. If the horse is overweight it will slowly lose weight through exercise, just like humans. If the horse is a good weight and is being fed correctly then instead of weight lose you'll get muscle gain and the horse may go up in weight as muscle is heavier than fat.
This depends on how much the person weighs and how much the horse weighs. The horse should be able to carry one third of its body weight.
If you buy a cheap good horse then put all your bm items on him or her and then fully train her/ him.
The type of supplement used to help a horse gain weight will vary from horse to horse as each horse reacts differently to each supplement. You can try adding Alfalfa to the diet, then a high fat low starch pelleted feed. If those don't work try adding rice bran , flax-seed (linseed), or a commercially made weight supplement. Good commercial weight supplements include Weight Builder (Farnam) and many others.
Enough exercise, good weight, a checkup from the farrier very often, etc.
A horse that needs only lesser amounts of food to keep in good condition/weight is called an Easy Keeper.
a good doer
It depends on what breed.... and the size of the horse. for and average horse say maybe a quarter horse, probably around 900 to 1000 lbs. once again it depends on the breed and how healthy the horse is/age and what kind of food it's fed.
Depends on the horse and what is going on in his life. Senior food is a good all-round feed with all the nutrition most horses need. Its a good way to put some weight on a too-thin horse or a horse that may have dental problems. Its best to consult your vet if your not sure of the right feeding program for your horse.
so you fully understand why you are losing weight and this also helps prevent cheating to have a routine eating schedule