Does the nutritional value of eggs change if chickens are fed lots of bakery waste?

There is free bread on offer near us. It has folic acid and soy flour added to it, which are things I don't eat. I am not sure whether it’s a good idea to feed it to my chickens or not?

Could the estrogenic effect of the soy get into the eggs?

Will the folic acid get into the eggs?

If there is lots of nickel in the bread from the soy flour, could this also increase the amount of nickel in the eggs?

The chickens get greens, slugs, organic kitchen scraps, etc. At the moment I am also buying them a bagged mix of non-gmo wholegrains and seeds, and I was wondering what would happen if I replaced this grain mix with soaked bread?

Hi Kate, if the theory that you are what you eat holds any truth, I probably wouldn’t feed the bakery products.

I have no scientific basis for that, just my own observations on the differences (appearance and taste) between store bought factory eggs and the eggs from chickens raised as you are currently doing.  No comparison!