| During the winter when there is no pasture grass to eat and your livestock are getting all of their nourishment from hay, here is a good rule of thumb to figure out how much hay you'll need to have to last through the winter; Each full grown horse or cow will need about 1 ton (for 4 cows you would need to buy 4 tons, etc) For goat and sheep, you can count on 1 ton for every 4 full-grown animals. (8 sheep would need 2 tons) This estimate would be for good hay. I always get a little extra just-in-case. KP, from WA, entered 1999-12-15 | 