1 acre.
if you pasture the horse, than at least one acre, if you stable it, than basically enough for the stable and a place to ride the horse/ exercize it
A horse pasture should have enough space to graze as well as space to run. One horse is 1.5 AUs, so depending on your locality, pasture quality, time of year, etc., you could pasture one horse per 2 acres or more per month.
You will need more acres per horse in the southern part of Alberta than the north. Average is around 4 acres per horse, and up to 1.5 acre per horse in the northern parts. Though that's on excellent quality pasture: stocking rates may be a bit less on less-quality pasture. Not to mention that horses need room to run, unlike cattle, so you will need to add on a couple extra acres in addition to the amount that they will graze.
The amount of feed that should be given to a pastured horse will vary from horse to horse. Some horses may not require anything if the pasture quality is really good or if the horse is not in work or an easy keeper. However if the pasture is not of good quality then the horses may need at least supplemental hay and possibly a hard feed if the horse is a hard keeper or in moderate or higher work.
Yes, but the pasture in the winter may not be enough to sustain the horse so extra feed may be required.
Ponies tend to gain weight quicker than horses. But, really, it depends on how much pasture they are on and the amount of grain you give them.
In a stable in the countryside?
the black thouroughbred in my pasture
A horse in a good pasture will do.
This is the way horses are: your horse is the "new kid", the lowest in the pasture's pecking order. The gender make up of the pasture has an effect too, as does the gender of your horse; but they will all eventually work it out, it's a natural part of their world and they know how to handle it.
if you are the owner, then make the field more fertile if not, then choose a different center
You can place your horse in the pasture in order to give him forage. So long as he stays there long enough to give him the amount that he needs, you will not need to feed him forage from the feed box.