need help finding doc

Hi,
I hope this is the right place to post this.
I am searching for a documentary I saw a 2, or 3 years ago. It was about disapearing family farmers, and big ag. It featured a Iowa farmer, who used to raise hogs, but was driven out. Now he works for big ag(conagra, or cargill, I forget) feeding the hogs with an automated feeding system.
I have looked, and looked, and cannot find this doc anywhere.
Please, anybody know which one I'm talking about?
Thanks, Rxwoman.