This spring I got 15 cucukoo marans. First chickens I wanted a good duel breed. My hens have just started laying which is great. My plan was when hens are laying unwanted roosters would be eatten. At 7 months most of my roosters alive are weighting 7 to 8 lbs. I do have them separated from the hens now I am wondering if there is anything over the next two weeks I can do to help them gain good weight and not just fat. I'd just like to make a good choice for myself and my flock.