"A front-end loader is a large bucket mounted on the front of the tractor and used for scooping up and moving quantities of material. On a horse farm, that material is most often manure, but a front-end loader can move gravel, dirt, bedding, and even snow. If you tractor didn't come with a loader, you can add one (made by the same manufacturer or a third party), along with an auxiliary hydraulic system, as long as the loader is specifically designed to work on your tractor."
The bucket size for your tractor depends on what you are going to use the bucket for. If you are going to use the tractor loader to scrape and clean stalls, choose a bucket that is slightly wider than the front tires of the tractor so that you can scrape up next to a wall or a fence without the front tires getting in the way. A large capacity bucket is fine for manure or mulch, but a smaller bucket is needed for heavier materials like stone or hard-packed earth.