Like BGMatt, I don't think most of us can come up with better feed than a professionally formulated ration. My problem with what i can get is that its full of soy, which I think is a poor source of protein for a number of reasons.
For simplicity sake, I'm switching to flock raiser. I've got geese and multiple feeds has become a hassle. My geese like my fermented grain mix. I've switched over to barley, oats and wheat with some flax added on top. The chicks struggle with the whole grains so I run it thru the mill for them right now. I'm doing too much. Gotta figure out a simpler way. Free choice calcium source, grit, fermented grain at night and free choice flock raiser. The things like alfalfa I normally add in the winter months when they can't get out as much. When I start doing breeding pens, I'll have to change a couple things. I'm on a quest to find a good breeder ration. I can just keep their food in their building. Grrr....KISS otherwise when someone other than me takes care of things it will get messed up.
Jennifer
I refuse to feed soy. I balance rations for all kinds of livestock. The commercial feeds just have too much extra garbage that is used to make the numbers look good. Take soy, for example... Soy is used in most commercial feeds as a primary source of protein. Poultry need animal protein. They are not vegetarians. And those feeds that contain fish meal do not contain near enough animal protein, that's why they are offset with soy.
Different areas have access to certain grains and ingredients and balanced rations can be developed from those ingredients if you do your research and know what is required of that type of livestock. There ate also many (some free) reason balancing software Priam out there.
My poultry ration is nothing more than corn, peas and oats (a little what every once in a while but not too much). After fermenting I add nutribalancer... Then fish meal for chicks and limestone and bsf for adults. If it's is winter and they aren't free ranging then alfalfa meal and/or keep us also added.
The correct percentage of each ingredient gives you the proper balance of all needed nutrients. It doesn't take a phd it simply takes research.