Have you looked at this site? http://feedstuffs.com/ME2/dirsect.asp?sid=F8913E6D25E44A3C9AD8E7459...
I get the newsletter of job postings and it seems there is always somethign there that AnSci would be good for.
You AS degree is first and for most a degree. Get it done!!!! I hire a lot of people and outside of the first job I really dont care about the degree, How you perform in that first role sets the stage. I would get the degree and then try and get hired on by one of the big boys in feed and nutrition. Then you can gat a look at all kinds of different careers from the inside that can feed you passion and you wallet.
I'd finish the degree. I live in Wisconsin and seed sales internships are big here. So if i were you i'd try and get an internship while in school and that will set you up for experience and maybe get your foot in the door at the company and/or form relationships and have connections. Its who you know not necessarily what you know.