Feeding a Roo

Okay so I've been wondering....
My girls are gonna be a laying flock so I'll feed them Blue Seal Layer Pellets,but what about Peanut?
When Peanut is grown do I have to feed him separately?
Do roosters need a different diet than my hens?
I just don't want him to get sick,so I wanted to find out.
My flock isn't entirely free range because I'm gone a lot of the day and surrounded by nugget hungry predators.
They do however get out for at least 3 or 4 hours a day,then go back inside and eat their Developer Mash.
So will Peanut need a different diet or will he be okay eating Layer Pellets when the time comes?

Thanks for the help!