There are two basic types of kit here - the Spreader which takes straw bales and uses them to cover the ground of the cow stable with straw, and the Forage Mixers, which are used to mix and deliver feed.
When you finally do move into the dairy farm / cow ranching end of farming you will need to create a feed production network, which means obtaining the correct hardware and kit and sorting out the routine that is required to make the best use of it. Spreaders and Forage Mixers are a necessary part of that process.