how much is to much and should you feed it whole, cracked, or fresh off the cob? i have some asking questions about this but i can't remember all the details about corn just that you shouldn't feed them that much because it can kill and i don't remember if it was cracked corn or whole corn...
We make our own feed and we use(d) (depending on availability) it at 10% -20% of the entire feed. It's a average/good source of Vit A and lends a lot of palatability to a complete feed.
I understand it to be 9% protein and it's not a complete protein. It cannot be used as the only feed for chickens. All the other nutrients necessary for good health must be supplied. Some of the recipes I have seen show 40% of the feed mix can be corn, but I haven't looked at them all.
I use whole corn for scratch ... as in, toss it out on ground. But I rarely do this because we use organic corn and it's pricey. I also make sure that non-soluable grit is available. Granite usually.
I could never get the chickens to be normal in their eating practices when corn was involved in a scratch mix put in the feeder. If I put corn, wheat, barley, millet, oats in a feeder, they would throw everything on the floor looking for corn until all the wheat, barley, millet, and oats were on the ground and the corn was all eaten and the feeder was empty. I gave up on that a long time ago. Now I use it mostly just to herd them hither and yon as necessary, the same way I use sunflower seeds. Being careful not to give them too much because it's my view that they can get over fat and it can hurt their liver, giving them fatty liver disease. But that's just what I happen to understand about nutrition. Other opinions vary because there are studies showing all sorts of things.
I don't feed cracked corn because it gets lost on the ground. I also don't see the necessity when I buy whole corn and then cracking it would be an extra unnecessary step -- but I am talking about adult standard chickens, not chicks. The corn that we mix in our feed is broken to the size of a wheat kernal and smaller.
I have fed corn on the cob plenty of times. But usually that is corn for us and I like to eat it so I'm a little stingy. Corn grown in the garden is people food. If you're talking about corn dried on the cob, we have given them corn that way, too. However, we did end up shelling it for some reason. I can't remember what it was. It was either because the chickens couldn't get the dried kernal off the cob or that I was afraid that the cob itself wasn't dry enough for storage and was afraid of mold, etc., because of the variety we planted. Surely there are people with more experience than I with corn on the cob for chickens! I hope they chime in.
What is it that you want to do with the corn? How are you working it into the chickens' overall feeding plan? Oh, and I have heard some experts say not to feed corn whole, but I couldn't understand why not and we have never had a problem here ... yet.