I'd like to get a little more fat on my chickens in the next two weeks before butchering. They're seven week old, jumbo cross Pullets. Butchered one last week at 6 weeks and 5 days. She had plenty of lean muscle, 2.8 pounds without counting the skin, neck, organs or feet. But, she was really, really lean. As in, not a drop of fat, not even subcutaneous fat. What can I feed to increase fat? I'm currently feeding Purina Flock Raiser, plus a few tomatoes, and just a few other scraps of produce. Would it help to increase dietary fat, maybe with some BOSS, flax seeds or chia seeds? Or would increasing carbs with corn/oats or wheat help? Or, am I just fighting a losing battle because of the 110 degree heat? Trying to learn, since I'd like to get about twenty five in October. Would roosters be fattier?