Join Date: Jul 2008
Location: South of No-where
During the summer when he has pasture to graze on - he won't need much if any hay. Maybe a flake or two to keep himself occupied while stalled. Unfortunately we don't know where you are located at what your weather is like.
Here in KY I have 3 horses (range from 800-1200 lbs) and I have 5 acres. Through the end of April - usually October (earlier or later depending on drought, freezing etc) they are usually on pasture and I don't feed hay through that time because I do not stall. So I only have to figure enough hay for the winter months. I calculate it based on 6 months and always build a cushion. I tend to have some hay left - or like this year I lost some due to a windstorm taking a chunk off my barn roof in a storm and losing some due to wetness. You never know what crazy stuff may happen.
The way Rachel figured it is good - except how will you get exactly 18 lbs unless you are weighing it out? Most horse owners will split bales in 1/2 or 1/3s and split that over a meal. For your horse I would over estimate and figure it based on 1/2 the bale. So around here I would only feed hay 180 days per year roughly. 1/2 a bale per horse per day (split in at least 2 meals so 1/4 bale at each feeding) and that would be 90 bales. Then if you do want to add a few flakes in for the night time feeding while stalled and a cushion - I would get 120 just to be safe.
Now if your winters are colder and longer you will want more, but if your winters are shorter you may want less.
All I pay my psychiatrist is cost of feed and hay, and he'll listen to me any day!