Business Plans

I would like to start my own business some day and am also considering enrolling in an MBA program. Do MBAs teach how to write business plans or would I need to enroll in an MBA program with an Entrepreneurship specialization?

Writing an APA format “pretend” business plan. The format is a “let’s say you have to do this, write a paper explaining what you need and how you plan to do it” My question is this: when writing a paper like this one using APA format, is is necessary to have an abstract and sources? Considering that you are not necessarily writing a traditional research paper, I don’t see how these things will be useful to the paper.

So I really love animals and especially horses-I have been riding my whole life. So anyways I want to be a large farm animal vet and I want to run a facility for horses no one wants and train them. So I was thinking I would do the 8 year thing and during undergrad I would get a minor in business. So that way it would only be 8 years instead of 10.
Does that sound okay?