I have a one year old male broiler chicken. What do I feed him?

[iskochixken]

I have a 1 year and 10 months male broiler (not for consumption, he's a pet) and I noticed how he seldom eats his feeds. His feed is enertone and thought that it doesn't suits the nutrients that he needs at his age. What kind of feeds should I buy and the content?

 

[nuthatched]

Is he a Cornish cross or a some sort of ranger broiler? Is he white?
Which everyone is he eating and what are your concerns?