Fred's Hens :
Most scratch
has little or no purpose and no, your hens do not NEED it. Owners buy it because it is entertainment food, in the chicks scratch around pecking at it. It also can be useful to modify behaviors and reward them with something to come at the sound of a can rattling some scratch in it. It is likely that the reward could just as easily be something more nutritious. It's nutritional value is roughly half of layer feed, yet costs almost as much. Not a great value in my book. If it were $5 a 50 lb bag, I'd buy some from time to time, but at $10? Nope. I'd rather sprout oats or wheat, or buy alfalfa or other things with the money, but that's just me.
Sorry Fred but this isn't entirely true.
The benefits of scratch are.
1. It keeps hens busy and from getting bored. I toss scratch into the weedy growth around my garden fence so I don't have to weed whack. The birds dig and "scratch" the roots and kill the weeds where I want rather than the grass where I don't.
2. Tossing scratch into the litter on the coop floor gets them to "work" the litter keeping it aerated and drier than if they did not. It's great to keep that run floor from getting packed down and that keeps things soft for their dusting routine.
3. It also keeps them from "picking" at themselves and each other. Many times when you see a bird picked on it's due to boredom. You also see this in Parrots. They need something to occupy their minds.
4. Scratch does have oats which is good for protein and the corn helps them to generate heat on cold winter nights. This is why you don't over do it in hot areas but increase it in cold areas. If it's cold, really cold , you want them to go to bed with a full gizzard.
5. They like it and what's wrong with that?
6. Chicken people have been tossing scratch long before we were born and old ideas are not always worthless. Every book and many magazines I've read, tout the benefit of scratch.
So toss the scratch in areas where they have to "hunt" for it. DON"T rely on it for total diet.
But that's just me and my chickens.
Love ya ,
Rancher