Homemade Horse treat questions?

 
Homemade Horse treat questions?
What are some foods horses love the most?
What should not be added to the treats?What is dangerous,or things that need to be used in smaller amounts
How can I make the treats last more than a few days,I want to
be able to sell them at some point and would like them not to get bad quickly.

thanks
answer:
I googled homeade horse treat recipes and made one.! My horses loved them! They were small and like a soft cookie made of oats and bits of apples!!! They were fast and easy to make! But be careful! Don't feed 'em to much :D
look some recipes up on wikiow, or ehow im sure theyres recipes on there 4 horse treats :)