Ive been looking into this today also! Where can you buy the seeds? Barley, Wheat.... How much do they cost? 50lb bags?
I'm using wheat because I happen to have 3 - 45 gallon buckets of it already at home. I got mine from Sam's club for grinding for bread and it cost about $22 - $23 a bucket. I probably won't use "all" of this, as I'm just getting started and would prefer to keep my storage grains available. I'm going to look into purchasing more seed through a more local source if I can find it.
From what I've gathered seed & feed stores carry "seed" grains which can be used for fodder. Just need to make sure it's not treated seed (i.e. coated in anything)! Buying it that way is even cheaper since it's not as "clean" as wheat berries used to grind for bread. See what you can get locally. Wheat, Barley, BOSS, Oats (which from what I'm gathering is alot harder to sprout), just about any type of "grass" type plant. Everything is explained in that thread. I know it's a lot of reading, but it's so worth it!

Here are some blogs that were linked in various forums that I read about fodder.
http://grannysbest.blogspot.com/search/label/(71) Growing Fodder for my Goats (part 1)
http://www.peakprosperity.com/blog/growing-sprouted-fodder/72618
http://pacapride.wordpress.com/2012...ed-new-flood-and-drain-tray-system-installed/ <~ This person actually signed up for BYC and posted on that 146 page thread! Very knowledgable about fodder and fodder systems.
Anyway, that should be enough to get you started.
