Vitamin supplementation for layers

[KFDiesel]

Does anyone have any experience providing vitamin supplementation to layers. Like magnesium since it compliments calcium uptake, or vitamin E to enrich the eggs. These are just examples I made up dont know if they work or are healthy for my chickens. Any suggestions based on facts?

 

[Bailey]

I keep it simple- Don't need to reinvent the wheel-

Chick starter, pasture & bugs for the chicks

Layer pellets & free range- for the girls-

Gamebird grower , pasture & extra bugs- for the meat birds

Gamebird and bugs for the roosters

Treats- wild bird seed , garden trimmings and maggots