Because broilers need to grow quickly, they present some physical challenges in addition to specific nutritional requirements.
Rapid growth requires maximum food consumption.
For this reason, it is often recommended that you raise your broilers with 24 hours of light each day so that they have continuous access to food.
Once the heat lamps have been removed from your brooder box (usually around 4 weeks depending on your climate,) you would hang a 40 watt light bulb at 6 feet above the birds.
You can of course forego the artificial light but the growth rate will be slower.
Broilers require a high rate of protein in their feed. For the first 4 weeks the should receive feed with a protein content of around 23%.
From 4 weeks to slaughter the protein content needs to be around 19%.
It is important to provide a diet designed specialty.