From another blog... In the interest of spreading my poultry feed budget, I'm growing fodder for my flock during the winter months. So far, for every one pound of seed, I'm getting 6 1/2 pounds of green fodder. I use a bucket for the initial 24hr soak and then spread onto seedling flats. It's really easy and my birds love it. They eat the seeds, the roots, and the green shoots. I prefer to use barley, but I haven't been able to get bulk barley this year so I'm growing wheat with a handful of black oil sunflower seeds per flat. Anybody else grow fodder for their birds?

I soak my seed in a bucket that has holes which is set inside a bucket without holes. (Actually, it's a pair of empty plastic ice cream containers.) You want your water level twice that of the seed. Rinse your seed well before leaving to soak. The water should be clear. The next day, give the seed a very good rinse and then spread onto the tray. Below is a picture of a set of trays seeded with wheat which is a few days old and just beginning to sprout some green. Wheat grows pretty well and is less likely to mold than barley, (and can be grown at higher temperatures) but barley grows a thicker leaf than wheat so that's what I like when it's available. I gather up my trays in the morning and give them a good rinse in the sink (the tray with holes is nested inside a tray without holes....) and then set back on the shelf. If in doubt, it's better to water too little than too much. You do NOT want water to sit in the trays. Pour out the extra water after rinsing! The seeds themselves hold enough water to grow and usually only need a rinse once or twice a day. You want the seeds moist inside but not overly wet on the outside for very long or you encourage mold. I have my trays next to a window for light. In the middle of winter when it gets dark really early, I have a fluorescent light that turns on with a timer.
http://www.backyardchickens.com/t/713334/growing-fodder-for-chickens