Raising meat chickens is a very exciting, interesting, and rewarding experience. It is surprisingly easy for all ages and is suitable for someone with limited space. Cornish Rock cross is the most popular breed raised for meat. These broilers are specifically bred to grow very big very quickly. In only 6-8 weeks they go from cute fluffy chicks to large 6 pound chickens ready for processing, but there are a few things you need to know about these little fluff balls.